Counties in Louisiana
Each county page says how cases move there under Louisiana's rules, and lists the police agencies that serve it.
64 counties, largest first
- East Baton Rouge Parish456,180 people · 8 agencies
- Jefferson Parish431,398 people · 7 agencies
- Orleans Parish362,154 people · 8 agencies
- St. Tammany Parish279,108 people · 7 agencies
- Lafayette Parish257,949 people · 9 agencies
- Caddo Parish224,226 people · 7 agencies
- Calcasieu Parish208,466 people · 8 agencies
- Ouachita Parish158,542 people · 7 agencies
- Livingston Parish155,036 people · 8 agencies
- Tangipahoa Parish141,346 people · 10 agencies
- Ascension Parish135,105 people · 4 agencies
- Bossier Parish131,867 people · 9 agencies
- Rapides Parish125,877 people · 9 agencies
- Terrebonne Parish104,163 people · 2 agencies
- Lafourche Parish95,505 people · 5 agencies
- St. Landry Parish80,765 people · 11 agencies
- Iberia Parish66,846 people · 5 agencies
- Vermilion Parish57,671 people · 6 agencies
- Acadia Parish57,032 people · 7 agencies
- St. Martin Parish51,106 people · 6 agencies
- St. Charles Parish50,586 people · 1 agencies
- Lincoln Parish48,360 people · 7 agencies
- St. Mary Parish46,552 people · 6 agencies
- St. Bernard Parish45,642 people · 1 agencies
- Vernon Parish45,091 people · 5 agencies
- Washington Parish44,937 people · 3 agencies
- St. John the Baptist Parish39,875 people · 1 agencies
- Avoyelles Parish37,941 people · 7 agencies
- Beauregard Parish36,673 people · 3 agencies
- Natchitoches Parish36,089 people · 4 agencies
- Webster Parish34,948 people · 7 agencies
- Evangeline Parish31,980 people · 5 agencies
- Jefferson Davis Parish31,471 people · 5 agencies
- Iberville Parish29,579 people · 7 agencies
- West Baton Rouge Parish28,756 people · 4 agencies
- De Soto Parish27,381 people · 3 agencies
- Morehouse Parish23,705 people · 5 agencies
- Allen Parish22,672 people · 4 agencies
- Plaquemines Parish22,256 people · 1 agencies
- Grant Parish22,075 people · 4 agencies
- Sabine Parish21,834 people · 5 agencies
- Union Parish20,561 people · 4 agencies
- Assumption Parish19,720 people · 2 agencies
- Richland Parish19,582 people · 4 agencies
- Pointe Coupee Parish19,520 people · 3 agencies
- Franklin Parish19,002 people · 4 agencies
- St. James Parish18,938 people · 3 agencies
- East Feliciana Parish18,911 people · 5 agencies
- Concordia Parish17,836 people · 4 agencies
- Jackson Parish15,834 people · 4 agencies
- LaSalle Parish15,154 people · 3 agencies
- West Feliciana Parish15,134 people · 2 agencies
- Winn Parish14,961 people · 2 agencies
- Claiborne Parish13,354 people · 3 agencies
- Bienville Parish12,269 people · 5 agencies
- St. Helena Parish10,758 people · 3 agencies
- Caldwell Parish9,344 people · 1 agencies
- West Carroll Parish9,156 people · 3 agencies
- Madison Parish8,844 people · 3 agencies
- Catahoula Parish8,223 people · 4 agencies
- Red River Parish7,165 people · 2 agencies
- East Carroll Parish6,760 people · 2 agencies
- Cameron Parish4,718 people · 1 agencies
- Tensas Parish3,700 people · 4 agencies
Population: Census Bureau county population estimates, Vintage 2025 (cc-est2025-alldata), July 1, 2025.