Police agencies in Illinois
Every agency in the FBI's 2025 file for Illinois: city police, sheriffs, state police, campus, tribal, and other agencies, largest population served first.
City (807)
- Chicago Police Department2,715,488
- Aurora Police Department180,824
- Naperville Police Department154,062
- Joliet Police Department152,211
- Rockford Police Department147,186
- Elgin Police Department114,717
- Springfield Police Department112,595
- Peoria Police Department111,389
- Champaign Police Department92,875
- Waukegan Police Department88,433
- Cicero Police Department81,401
- Bloomington Police Department79,368
- Schaumburg Police Department76,773
- Evanston Police Department75,562
- Arlington Heights Police Department75,155
- Bolingbrook Police Department74,990
- Decatur Police Department68,221
- Palatine Police Department65,532
- Skokie Police Department65,401
- Des Plaines Police Department58,435
- Orland Park Police Department57,891
- Oak Lawn Police Department56,136
- Mount Prospect Police Department55,157
- Berwyn Police Department54,703
- Tinley Park Police Department54,618
- Wheaton Police Department53,702
- Normal Police Department53,374
- Oak Park Police Department52,550
- Downers Grove Police Department50,647
- Hoffman Estates Police Department50,564
- Plainfield Police Department49,912
- Glenview Police Department47,409
- Elmhurst Police Department46,205
- Lombard Police Department44,509
- Buffalo Grove Police Department43,067
- Moline Police Department42,331
- Crystal Lake Police Department41,838
- Romeoville Police Department41,271
- Bartlett Police Department40,644
- DeKalb Police Department40,558
- Belleville Police Department40,142
- Urbana Police Department40,076
- Oswego Police Department39,860
- Carol Stream Police Department39,506
- Quincy Police Department38,591
- Park Ridge Police Department38,187
- Wheeling Police Department38,111
- Streamwood Police Department38,094
- Carpentersville Police Department36,955
- Hanover Park Police Department36,523
- Rock Island Police Department36,292
- Addison Police Department35,753
- Calumet City Police Department34,599
- Northbrook Police Department34,398
- Woodridge Police Department34,100
- St. Charles Police Department33,584
- Mundelein Police Department32,923
- Glendale Heights Police Department32,808
- O'Fallon Police Department32,108
- Elk Grove Village Police Department31,583
- Pekin Police Department31,128
- Highland Park Police Department30,956
- Algonquin Police Department30,758
- North Chicago Police Department30,614
- Gurnee Police Department30,518
- Niles Police Department29,705
- McHenry Police Department29,207
- Galesburg Police Department29,128
- Glen Ellyn Police Department28,855
- New Lenox Police Department28,798
- Huntley Police Department28,679
- Lake in the Hills Police Department28,651
- Burbank Police Department28,424
- Lansing Police Department27,898
- Danville Police Department27,702
- Wilmette Police Department27,288
- Yorkville Police Department27,164
- Lockport Police Department27,110
- Round Lake Beach Police Department27,062
- Vernon Hills Police Department27,046
- Edwardsville Police Department26,691
- Granite City Police Department26,691
- Oak Forest Police Department26,677
- Batavia Police Department26,566
- Chicago Heights Police Department26,329
- Woodstock Police Department25,952
- West Chicago Police Department25,446
- Belvidere Police Department25,339
- South Elgin Police Department25,198
- Homer Glen Police Department24,941
- Alton Police Department24,803
- Grayslake Police Department24,803
- Zion Police Department24,546
- Morton Grove Police Department24,287
- Westmont Police Department24,282
- Melrose Park Police Department23,827
- Loves Park Police Department23,696
- Rolling Meadows Police Department23,621
- Collinsville Police Department23,618
- Elmwood Park Police Department23,520
- Lisle Police Department23,520
- Kankakee Police Department23,419
- Maywood Police Department23,351
- Freeport Police Department22,939
- Roselle Police Department22,859
- Machesney Park Police Department22,816
- Bloomingdale Police Department22,690
- Montgomery Police Department22,357
- Carbondale Police Department22,213
- Darien Police Department22,020
- Villa Park Police Department21,974
- East Peoria Police Department21,921
- Blue Island Police Department21,643
- Frankfort Police Department21,378
- Geneva Police Department21,126
- East Moline Police Department20,917
- Park Forest Police Department20,869
- Libertyville Police Department20,663
- South Holland Police Department20,625
- Dolton Police Department20,541
- Crest Hill Police Department20,175
- Lake Zurich Police Department20,004
- Mokena Police Department19,928
- Lake Forest Police Department19,716
- Harvey Police Department19,668
- North Aurora Police Department19,600
- Evergreen Park Police Department19,163
- Deerfield Police Department19,140
- Sycamore Police Department19,042
- Ottawa Police Department18,764
- Brookfield Police Department18,749
- Homewood Police Department18,646
- Round Lake Police Department18,645
- Shorewood Police Department18,608
- Bensenville Police Department18,594
- Matteson Police Department18,455
- Alsip Police Department18,361
- Lemont Police Department18,306
- Cary Police Department18,087
- Bourbonnais Police Department18,080
- Franklin Park Police Department18,040
- Bellwood Police Department17,990
- Palos Hills Police Department17,919
- Jacksonville Police Department17,692
- East St. Louis Police Department17,663
- Hinsdale Police Department17,656
- Morton Police Department17,653
- IL060410017,560
- Charleston Police Department17,307
- Marion Police Department17,069
- Cahokia Heights Police Department16,858
- Mattoon Police Department16,540
- Bridgeview Police Department16,461
- Westchester Police Department16,187
- Country Club Hills Police Department16,122
- Fairview Heights Police Department15,980
- La Grange Police Department15,856
- Washington Police Department15,806
- Warrenville Police Department15,685
- Prospect Heights Police Department15,462
- Bradley Police Department15,277
- Antioch Police Department15,234
- Dixon Police Department15,104
- Shiloh Police Department14,912
- Norridge Police Department14,723
- Macomb Police Department14,707
- Chatham Police Department14,696
- Morris Police Department14,677
- Channahon Police Department14,629
- Lindenhurst Police Department14,612
- Swansea Police Department14,470
- Sterling Police Department14,461
- Mount Vernon Police Department14,062
- Wauconda Police Department14,052
- Hickory Hills Police Department14,035
- Wood Dale Police Department13,971
- Chicago Ridge Police Department13,952
- Glen Carbon Police Department13,890
- Midlothian Police Department13,775
- Forest Park Police Department13,740
- Western Springs Police Department13,515
- La Grange Park Police Department13,402
- Lincoln Police Department12,998
- Lincolnwood Police Department12,968
- Minooka Police Department12,945
- Hazel Crest Police Department12,941
- Plano Police Department12,878
- Canton Police Department12,787
- Effingham Police Department12,461
- Richton Park Police Department12,446
- Winnetka Police Department12,445
- Northlake Police Department12,345
- Rantoul Police Department12,254
- Streator Police Department12,242
- Herrin Police Department12,230
- Justice Police Department12,194
- Kewanee Police Department12,067
- Palos Heights Police Department12,007
- Troy Police Department11,901
- River Forest Police Department11,833
- Pingree Grove Police Department11,809
- Centralia Police Department11,699
- Schiller Park Police Department11,242
- Markham Police Department11,210
- Burr Ridge Police Department11,208
- Waterloo Police Department11,206
- Manhattan Police Department11,108
- Pontiac Police Department11,016
- Roscoe Police Department10,986
- Mahomet Police Department10,922
- Fox Lake Police Department10,916
- Campton Hills Police Department10,899
- Columbia Police Department10,890
- Summit Police Department10,675
- Worth Police Department10,593
- Barrington Police Department10,592
- Crestwood Police Department10,473
- River Grove Police Department10,387
- Lyons Police Department10,359
- Winfield Police Department10,300
- Riverdale Police Department10,221
- Taylorville Police Department10,205
- Wood River Police Department10,205
- Highland Police Department10,015
- Peru Police Department9,764
- Hawthorn Woods Police Department9,711
- Sauk Village Police Department9,563
- Rochelle Police Department9,520
- Itasca Police Department9,497
- Harvard Police Department9,396
- La Salle Police Department9,389
- Sugar Grove Police Department9,359
- Steger Police Department9,326
- Flossmoor Police Department9,303
- Lynwood Police Department9,280
- Gilberts Police Department9,261
- Manteno Police Department9,255
- Mascoutah Police Department9,205
- Hampshire Police Department9,202
- Willowbrook Police Department9,169
- Bethalto Police Department9,151
- Riverside Police Department8,891
- Lake Villa Police Department8,740
- Clarendon Hills Police Department8,707
- Glencoe Police Department8,694
- Harwood Heights Police Department8,688
- Rock Falls Police Department8,575
- Monmouth Police Department8,571
- Maryville Police Department8,375
- Olney Police Department8,367
- Jerseyville Police Department8,357
- Crete Police Department8,355
- Glenwood Police Department8,352
- Oak Brook Police Department8,198
- Island Lake Police Department8,074
- Paris Police Department8,032
- Lincolnshire Police Department8,025
- Silvis Police Department8,005
- South Beloit Police Department7,983
- Hillside Police Department7,970
- Park City Police Department7,955
- West Dundee Police Department7,912
- Round Lake Park Police Department7,880
- Rockton Police Department7,862
- Harrisburg Police Department7,860
- Broadview Police Department7,844
- Marengo Police Department7,736
- Princeton Police Department7,623
- Inverness Police Department7,387
- Vandalia Police Department7,334
- Sandwich Police Department7,321
- North Riverside Police Department7,104
- Greenville Police Department7,100
- West Frankfort Police Department7,100
- Murphysboro Police Department7,036
- Robinson Police Department7,032
- University Park Police Department7,021
- Elburn Police Department6,990
- Salem Police Department6,953
- Mendota Police Department6,893
- Clinton Police Department6,858
- Stickney Police Department6,856
- Chester Police Department6,746
- Calumet Park Police Department6,725
- Mount Carmel Police Department6,720
- Orland Hills Police Department6,630
- Winthrop Harbor Police Department6,560
- Benton Police Department6,548
- Litchfield Police Department6,545
- Lakemoor Police Department6,522
- Geneseo Police Department6,493
- Johnsburg Police Department6,443
- Hillsboro Police Department6,287
- Braidwood Police Department6,259
- Countryside Police Department6,207
- Chillicothe Police Department6,037
- Monticello Police Department6,026
- Mount Zion Police Department5,868
- Pontoon Beach Police Department5,842
- Coal City Police Department5,838
- Bartonville Police Department5,813
- Carterville Police Department5,812
- Peoria Heights Police Department5,779
- Willow Springs Police Department5,779
- Beardstown Police Department5,773
- Metropolis Police Department5,733
- Wonder Lake Police Department5,697
- Wilmington Police Department5,624
- Lake Bluff Police Department5,598
- Northfield Police Department5,597
- East Alton Police Department5,585
- Spring Grove Police Department5,573
- Genoa Police Department5,567
- Du Quoin Police Department5,563
- Carlinville Police Department5,537
- Highwood Police Department5,430
- Posen Police Department5,374
- Spring Valley Police Department5,362
- Eureka Police Department5,182
- Monee Police Department5,145
- Berkeley Police Department5,115
- South Barrington Police Department5,060
- Milan Police Department5,018
- Pana Police Department4,998
- Colona Police Department4,941
- Pinckneyville Police Department4,938
- Staunton Police Department4,907
- Creve Coeur Police Department4,809
- Palos Park Police Department4,794
- Sparta Police Department4,780
- Fairfield Police Department4,766
- Marseilles Police Department4,766
- Fox River Grove Police Department4,763
- Beecher Police Department4,733
- Kildeer Police Department4,681
- Tuscola Police Department4,661
- Cortland Police Department4,642
- Carmi Police Department4,640
- Hoopeston Police Department4,640
- Sherman Police Department4,625
- Breese Police Department4,621
- Flora Police Department4,611
- Lebanon Police Department4,599
- Olympia Fields Police Department4,564
- Robbins Police Department4,554
- Shelbyville Police Department4,513
- Freeburg Police Department4,497
- Gillespie Police Department4,461
- Watseka Police Department4,453
- Stone Park Police Department4,451
- Auburn Police Department4,430
- Caseyville Police Department4,396
- Paxton Police Department4,392
- Lawrenceville Police Department4,346
- Lakewood Police Department4,291
- Sullivan Police Department4,273
- Peotone Police Department4,247
- Hometown Police Department4,160
- Anna Police Department4,136
- Rochester Police Department4,091
- Barrington Hills Police Department4,076
- Dwight Police Department4,034
- Pittsfield Police Department4,017
- Morrison Police Department3,968
- Indian Head Park Police Department3,931
- Millstadt Police Department3,929
- Burnham Police Department3,888
- Coal Valley Police Department3,885
- Metamora Police Department3,863
- Smithton Police Department3,860
- South Chicago Heights Police Department3,859
- Marshall Police Department3,844
- Rosemont Police Department3,793
- Riverwoods Police Department3,784
- Byron Police Department3,759
- Red Bud Police Department3,756
- Dupo Police Department3,754
- IL04945003,666
- Oglesby Police Department3,610
- Tolono Police Department3,581
- Fulton Police Department3,565
- Fairbury Police Department3,556
- Oregon Police Department3,555
- Eldorado Police Department3,547
- IL04928003,530
- Aledo Police Department3,498
- Le Roy Police Department3,489
- Riverton Police Department3,475
- Gibson City Police Department3,437
- New Baden Police Department3,388
- Johnston City Police Department3,292
- Carlyle Police Department3,200
- Galena Police Department3,180
- South Jacksonville Police Department3,174
- Momence Police Department3,152
- IL04931003,144
- Virden Police Department3,129
- Sleepy Hollow Police Department3,121
- East Dundee Police Department3,101
- Madison Police Department3,041
- Westville Police Department3,003
- Nashville Police Department2,984
- Georgetown Police Department2,969
- Dixmoor Police Department2,928
- Arcola Police Department2,911
- Heyworth Police Department2,906
- Winnebago Police Department2,903
- Rushville Police Department2,889
- Cherry Valley Police Department2,887
- IL04801002,852
- Knoxville Police Department2,827
- Havana Police Department2,795
- Mount Morris Police Department2,778
- El Paso Police Department2,728
- Oakbrook Terrace Police Department2,725
- Diamond Police Department2,720
- Newton Police Department2,710
- Pawnee Police Department2,702
- Savanna Police Department2,693
- Trenton Police Department2,649
- Lena Police Department2,643
- Hamilton Police Department2,642
- Bushnell Police Department2,635
- Christopher Police Department2,606
- Round Lake Heights Police Department2,595
- Sumner Police Department2,586
- McLeansboro Police Department2,579
- Tilton Police Department2,508
- Marquette Heights Police Department2,472
- Washington Park Police Department2,459
- Aviston Police Department2,455
- Villa Grove Police Department2,442
- Kenilworth Police Department2,420
- Carthage Police Department2,413
- Sheridan Police Department2,410
- Galva Police Department2,381
- Casey Police Department2,362
- Carrollton Police Department2,349
- Seneca Police Department2,301
- Henry Police Department2,288
- Wayne Police Department2,286
- Thornton Police Department2,281
- Arthur Police Department2,279
- Farmington Police Department2,273
- Elwood Police Department2,254
- Tremont Police Department2,240
- Polo Police Department2,227
- Amboy Police Department2,211
- Altamont Police Department2,195
- Brighton Police Department2,151
- White Hall Police Department2,151
- Fairmont City Police Department2,148
- Petersburg Police Department2,141
- Richmond Police Department2,133
- Nokomis Police Department2,113
- Fisher Police Department2,103
- Lexington Police Department2,097
- Oakwood Hills Police Department2,057
- Pecatonica Police Department2,053
- Mount Sterling Police Department2,039
- Elmwood Police Department2,034
- Cambridge Police Department2,022
- Rockdale Police Department1,974
- Hinckley Police Department1,971
- Mason City Police Department1,961
- Prairie Grove Police Department1,950
- Lewistown Police Department1,940
- Mount Olive Police Department1,925
- IL10205001,921
- IL07202001,911
- Catlin Police Department1,902
- Merrionette Park Police Department1,900
- Prophetstown Police Department1,898
- IL10204001,892
- Athens Police Department1,888
- Sesser Police Department1,872
- Cambria Police Department1,861
- New Athens Police Department1,851
- Albion Police Department1,850
- Mackinaw Police Department1,840
- South Roxana Police Department1,840
- Lacon Police Department1,830
- Farmer City Police Department1,814
- IL08102001,801
- Hudson Police Department1,768
- Girard Police Department1,760
- Somonauk Police Department1,756
- IL08111001,750
- IL01628001,739
- Marissa Police Department1,722
- Moweaqua Police Department1,717
- Teutopolis Police Department1,711
- Orion Police Department1,704
- Chenoa Police Department1,694
- Bridgeport Police Department1,658
- IL03802001,658
- Stockton Police Department1,653
- Ina Police Department1,648
- Jonesboro Police Department1,643
- IL08107001,638
- Phoenix Police Department1,637
- Jerome Police Department1,636
- Atlanta Police Department1,627
- Kirkland Police Department1,615
- Earlville Police Department1,595
- Thomson Police Department1,591
- Carrier Mills Police Department1,585
- Bunker Hill Police Department1,582
- IL05620001,578
- Waterman Police Department1,574
- De Pue Police Department1,561
- Southern View Police Department1,542
- Delavan Police Department1,538
- Maroa Police Department1,522
- Mount Pulaski Police Department1,500
- Winchester Police Department1,495
- Maple Park Police Department1,494
- Grayville Police Department1,491
- Herscher Police Department1,487
- Erie Police Department1,485
- Hodgkins Police Department1,485
- Roodhouse Police Department1,482
- Cairo Police Department1,478
- Manito Police Department1,472
- Virginia Police Department1,461
- Zeigler Police Department1,461
- Lanark Police Department1,451
- East Dubuque Police Department1,447
- Bement Police Department1,445
- IL03409001,444
- Venice Police Department1,443
- Williamsville Police Department1,441
- IL05710001,440
- North Pekin Police Department1,431
- Ladd Police Department1,422
- Mount Carroll Police Department1,422
- De Soto Police Department1,408
- Germantown Police Department1,402
- Leland Grove Police Department1,400
- Hebron Police Department1,399
- Roxana Police Department1,398
- Forreston Police Department1,395
- IL05901001,393
- Durand Police Department1,382
- Grandview Police Department1,381
- Neoga Police Department1,380
- Bannockburn Police Department1,377
- IL03202001,368
- St. Jacob Police Department1,366
- New Berlin Police Department1,354
- Vienna Police Department1,350
- North Utica Police Department1,348
- Oblong Police Department1,344
- Greenup Police Department1,342
- Okawville Police Department1,342
- Granville Police Department1,325
- IL06203001,316
- Kincaid Police Department1,305
- IL07402001,290
- Onarga Police Department1,283
- Clifton Police Department1,282
- Grant Park Police Department1,280
- Chrisman Police Department1,266
- Oakwood Police Department1,263
- Warren Police Department1,263
- Wyoming Police Department1,262
- Walnut Police Department1,255
- East Hazel Crest Police Department1,245
- IL07205001,244
- IL07501001,243
- St. Elmo Police Department1,237
- Tower Lakes Police Department1,211
- Valmeyer Police Department1,211
- IL07107001,202
- Palestine Police Department1,202
- Bethany Police Department1,185
- Downs Police Department1,182
- Ashland Police Department1,181
- IL08101001,165
- Toulon Police Department1,160
- Rossville Police Department1,149
- Hartford Police Department1,144
- Waverly Police Department1,137
- Bull Valley Police Department1,136
- IL01910001,136
- Minier Police Department1,132
- La Harpe Police Department1,128
- IL02903001,126
- IL05805001,124
- St. Anne Police Department1,124
- Albers Police Department1,121
- Sandoval Police Department1,117
- Assumption Police Department1,115
- Camp Point Police Department1,115
- Divernon Police Department1,110
- Hopedale Police Department1,100
- Milford Police Department1,099
- Buffalo-Mechanicsburg Police Department1,096
- Kingston Police Department1,093
- Atwood Police Department1,092
- Norris City Police Department1,091
- Blue Mound Police Department1,080
- Warrensburg Police Department1,080
- IL01002001,077
- Colchester Police Department1,076
- Martinsville Police Department1,076
- Danvers Police Department1,074
- Worden Police Department1,064
- Oquawka Police Department1,061
- Central City Police Department1,059
- Goreville Police Department1,052
- Edinburg Police Department1,049
- IL07108001,047
- Royalton Police Department1,038
- Cobden Police Department1,032
- Thomasboro1,021
- Lovington Police Department1,010
- Washburn Police Department1,007
- IL03806001,002
- Greenfield Police Department995
- Wayne City Police Department989
- Shawneetown Police Department985
- Milledgeville Police Department984
- Mazon Police Department983
- Colfax Police Department982
- Marine Police Department980
- Morrisonville Police Department970
- McCullom Lake Police Department965
- Goodfield Police Department961
- South Pekin Police Department960
- Wamac Police Department960
- Energy Police Department953
- IL0620400951
- IL0350300947
- IL0520100933
- Hamel Police Department925
- Atkinson Police Department924
- Beckemeyer Police Department924
- Leland Police Department924
- Sheldon Police Department921
- Mansfield Police Department914
- Raymond Police Department913
- Gifford Police Department906
- Nauvoo Police Department903
- Pleasant Hill900
- Ramsey Police Department891
- IL0290100878
- IL0580600872
- Franklin Grove Police Department871
- Essex Police Department857
- Annawan Police Department854
- Shannon Police Department852
- IL0581000851
- Albany Police Department849
- Glasford Police Department846
- Viola Police Department837
- IL0390500834
- IL0841200832
- Coulterville Police Department825
- Hanover Police Department820
- Pleasant Plains Police Department814
- Grafton Police Department807
- Ridgway Police Department795
- Loami Police Department794
- Stonington Police Department794
- Meredosia Police Department788
- Enfield Police Department774
- Newman Police Department772
- Dallas City Police Department771
- IL0380700770
- Stronghurst Police Department762
- Witt Police Department761
- Forest View Police Department759
- Hardin Police Department758
- IL0790500750
- Hurst Police Department748
- Alexis Police Department747
- Livingston Police Department745
- Ridge Farm Police Department744
- IL0480300740
- West Salem Police Department738
- IL0270300735
- McLean Police Department735
- Tonica Police Department733
- Union Police Department732
- IL0101200730
- Woodhull Police Department728
- Greenview Police Department718
- Brookport Police Department684
- Elizabeth Police Department683
- Tampico Police Department671
- La Moille Police Department665
- Avon Police Department664
- Farmersville Police Department663
- Pocahontas Police Department663
- IL0811000660
- Bradford Police Department658
- IL0461800651
- Godley Police Department650
- Alpha Police Department649
- Potomac Police Department649
- New Windsor Police Department648
- Deer Creek Police Department647
- Findlay Police Department645
- Kansas Police Department645
- IL0571300643
- Dongola Police Department641
- IL0890400639
- West City Police Department637
- Yates City Police Department634
- IL0461500630
- Coffeen Police Department625
- IL0760100620
- Brooklyn Police Department616
- Thayer Police Department612
- IL0010700610
- Holiday Hills Police Department604
- Mounds Police Department597
- Green Valley Police Department595
- Bluffs Police Department591
- Palmyra Police Department590
- Stanford Police Department586
- Bedford Park Police Department584
- Fairmount Police Department583
- IL0891100563
- Irvington Police Department562
- IL0291000556
- Willisville Police Department555
- Williamsfield Police Department554
- IL0680600551
- Blandinsville Police Department547
- Murrayville Police Department542
- IL0281100535
- IL0341000535
- Farina Police Department528
- IL0980300528
- IL0452000524
- IL0730400523
- Chandlerville Police Department517
- St. Francisville Police Department517
- IL0120400516
- Prairie du Rocher Police Department513
- Grand Ridge Police Department506
- IL0780500505
- Patoka Police Department504
- Golf Police Department503
- Equality Police Department499
- Cowden Police Department495
- Iuka Police Department486
- Chadwick Police Department475
- Grand Tower Police Department475
- IL0770200472
- Hutsonville Police Department470
- IL0920800469
- Fithian Police Department468
- San Jose Police Department465
- Buda Police Department462
- Sidell Police Department462
- Ullin Police Department455
- IL0823000444
- IL0950400444
- Pierron Police Department441
- IL0721300432
- IL0670400419
- IL0340800418
- Cherry Police Department417
- German Valley Police Department413
- Hillsdale Police Department413
- Fairview Police Department406
- Sorento Police Department406
- Neponset Police Department405
- IL0281000396
- East Carondelet Police Department369
- IL0391000367
- IL0591700362
- Irving Police Department361
- IL0730300352
- IL0920100341
- Grantfork Police Department339
- IL1020900337
- Apple River Police Department331
- Ellis Grove Police Department328
- IL0380800328
- Summerfield Police Department328
- Baldwin Police Department314
- IL0260300310
- Ruma Police Department309
- IL0901800302
- Ludlow Police Department300
- Easton Police Department299
- IL0822100284
- Bureau Police Department276
- IL0830600276
- IL0780300273
- IL0630700257
- Dunfermline Police Department250
- McCook Police Department239
- Indianola Police Department217
- Forest City Police Department208
- Henning Police Department199
- IL0681400169
- Dana Police Department157
- Donnellson Police Department149
- Sauget Police Department133
- IL0890700122
- IL0300300103
- Gulfport Police Department38
County (102)
- Lake County Sheriff's Office136,402
- Cook County Sheriff's Office114,817
- Will County Sheriff's Office103,299
- DuPage County Sheriff's Office97,926
- Madison County Sheriff's Office74,391
- McHenry County Sheriff's Office65,751
- Kane County Sheriff's Office63,525
- Winnebago County Sheriff's Office56,375
- Champaign County Sheriff's Office51,727
- St. Clair County Sheriff's Office51,689
- Peoria County Sheriff's Office47,695
- Sangamon County Sheriff's Office34,407
- La Salle County Sheriff's Office32,851
- Kankakee County Sheriff's Office32,486
- Kendall County Sheriff's Office28,142
- Ogle County Sheriff's Office28,127
- Boone County Sheriff's Office26,144
- Rock Island County Sheriff's Office25,981
- Woodford County Sheriff's Office25,850
- Williamson County Sheriff's Office25,245
- Tazewell County Sheriff's Office24,260
- Adams County Sheriff's Office24,182
- McLean County Sheriff's Office23,434
- Macon County Sheriff's Office22,463
- Jackson County Sheriff's Office22,178
- Vermilion County Sheriff's Office22,108
- Jefferson County Sheriff's Office20,263
- Whiteside County Sheriff's Office19,089
- Effingham County Sheriff's Office18,291
- Macoupin County Sheriff's Office18,139
- Iroquois County Sheriff's Office16,871
- Stephenson County Sheriff's Office16,832
- Livingston County Sheriff's Office16,681
- DeKalb County Sheriff's Office16,333
- Marion County Sheriff's Office16,161
- Franklin County Sheriff's Office15,690
- Grundy County Sheriff's Office15,599
- Knox County Sheriff's Office15,421
- Lee County Sheriff's Office15,310
- Henry County Sheriff's Office15,108
- Clinton County Sheriff's Office15,075
- Fulton County Sheriff's Office14,012
- Shelby County Sheriff's Office13,038
- Bureau County Sheriff's Office12,932
- Christian County Sheriff's Office12,802
- Coles County Sheriff's Office12,523
- Randolph County Sheriff's Office12,358
- Jo Daviess County Sheriff's Office12,062
- Monroe County Sheriff's Office11,942
- Jersey County Sheriff's Office11,657
- Logan County Sheriff's Office11,178
- Fayette County Sheriff's Office11,136
- Johnson County Sheriff's Office10,950
- Wayne County Sheriff's Office10,153
- Mercer County Sheriff's Office9,933
- Saline County Sheriff's Office9,665
- Union County Sheriff's Office9,373
- Pike County Sheriff's Office9,282
- Hancock County Sheriff's Office9,212
- Morgan County Sheriff's Office9,147
- Montgomery County Sheriff's Office9,117
- Perry County Sheriff's Office9,113
- Washington County Sheriff's Office8,507
- Crawford County Sheriff's Office8,323
- Clay County Sheriff's Office8,129
- Bond County Sheriff's Office7,976
- Clark County Sheriff's Office7,750
- Piatt County Sheriff's Office7,691
- McDonough County Sheriff's Office7,648
- Cumberland County Sheriff's Office7,564
- Marshall County Sheriff's Office7,422
- Menard County Sheriff's Office7,168
- Douglas County Sheriff's Office7,119
- Massac County Sheriff's Office7,117
- Warren County Sheriff's Office7,114
- Moultrie County Sheriff's Office7,084
- Richland County Sheriff's Office6,922
- DeWitt County Sheriff's Office6,647
- Edgar County Sheriff's Office6,393
- Jasper County Sheriff's Office6,364
- White County Sheriff's Office5,981
- Carroll County Sheriff's Office5,955
- Ford County Sheriff's Office5,640
- Lawrence County Sheriff's Office5,611
- Mason County Sheriff's Office5,434
- Hamilton County Sheriff's Office5,215
- Greene County Sheriff's Office4,341
- Putnam County Sheriff's Office4,322
- Brown County Sheriff's Office4,302
- Wabash County Sheriff's Office4,203
- Henderson County Sheriff's Office3,975
- Schuyler County Sheriff's Office3,847
- Pulaski County Sheriff's Office3,766
- Cass County Sheriff's Office3,747
- Pope County Sheriff's Office3,698
- Hardin County Sheriff's Office3,534
- Calhoun County Sheriff's Office3,432
- Alexander County Sheriff's Office2,993
- Scott County Sheriff's Office2,759
- Edwards County Sheriff's Office2,702
- Gallatin County Sheriff's Office2,361
- Stark County Sheriff's Office2,177
Other (61)
- Alton and Southern Railway
- Belt Railway
- Burlington Northern Santa Fe Railway
- Canadian National Railway
- Canadian Pacific Railway
- Capitol Airport Authority
- Chicago Fire Department Arson Investigations
- Chicago Heights Park District
- Cook County Forest Preserve
- Cook County Hospital
- Crystal Lake Park District
- CSX Transportation
- Decatur Park District
- DuPage County Forest Preserve
- Elgin, Joliet and Eastern Railway
- Fon du Lac Park District
- Fox Valley Park District
- Freeport Park District
- Greater Rockford Airport
- IL0150700
- IL0150800
- IL0161Q00
- IL0162J9E
- IL0166P00
- IL0223200
- IL0224200
- IL0291800
- IL0390700
- IL0461700
- IL0493700
- IL0494000
- IL0602900
- IL0721900
- IL0811800
- IL082359P
- IL0992800
- IL1011900
- Indiana Harbor Belt Railroad
- Kane County Forest Preserve
- Lake County Forest Preserve
- Lockport Township Park District
- McHenry County Conservation District
- Metra Police Department
- Metropolitan Water Reclamation District of Greater Chicago
- Naperville Park District
- Norfolk Southern Railway: Cook County
- Norfolk Southern Railway: Macon County
- Norfolk Southern Railway: Madison County
- Oak Forest Health Center
- Pekin Park District
- Peoria Park District
- Rockford Metro Centre
- Rockford Park District
- Round Lake Park District
- Springfield Park District
- Terminal Railroad Association
- Tri-County Drug Enforcement Narcotics Team
- Union Pacific Railroad: Cook County
- Union Pacific Railroad: St. Clair County
- Will County Forest Preserve
- Zion Park District
University or College (50)
- Aurora University
- Benedictine University: Lisle
- Black Hawk College: Kewanee
- Black Hawk College: Moline
- Bradley University
- Chicago State University
- College of DuPage
- College of Lake County
- Eastern Illinois University
- Elgin Community College
- Eureka College
- Governors State University
- Harper College
- Illinois Central College
- Illinois State University
- John A. Logan College
- John Wood Community College
- Joliet Junior College
- Kankakee Community College
- Kaskaskia College
- Lake Land College
- Lewis University
- Lincoln Land Community College
- Loyola University
- McHenry County College
- Millikin University
- Moraine Valley Community College
- Morton College
- Northeastern Illinois University
- Northern Illinois University
- Northwestern University: Chicago
- Northwestern University: Evanston
- Oakton Community College
- Parkland College
- Prairie State College
- Rend Lake College
- Richland Community College
- Rock Valley College
- South Suburban College
- Southern Illinois University: Carbondale
- Southern Illinois University: Edwardsville
- Southern Illinois University: School of Medicine
- Southwestern Illinois College
- Triton College
- University of Chicago: Cook County
- University of Illinois: Chicago
- University of Illinois: Springfield
- University of Illinois: Urbana
- Waubonsee Community College
- Western Illinois University