CrimeDB

KansasCounties

Johnson County

636,906 people, served by 23 police agencies that report to the FBI. Below: how a case moves here, from arrest to court.

How a case moves here

Johnson County follows Kansas law on arrests, release, and courts. These rules are the same in every county in the state; the full set covers prosecutors, defense, and jails too.

Who decides release first

Jail staff sworn in as deputy clerks of the district court often release people on the district's bond schedule before they see a judge. Otherwise a district judge or district magistrate judge sets the bond at the first appearance. District magistrate judges may be non-lawyers.

K.S.A. 22-2901K.S.A. 22-2802
Time to see a judge

A person arrested without a warrant must be taken without unnecessary delay before the nearest available magistrate, and a complaint filed at once. Kansas law sets no general number of hours.

K.S.A. 22-2901(1)
Money bail

Kansas courts may set money appearance bonds, and the bond must list every condition of release.

K.S.A. 22-2802
Courts

The district court tries every felony and state misdemeanor. District magistrate judges within it hear misdemeanors, felony first appearances, and preliminary exams. Cities run municipal courts that hear city ordinance violations.

K.S.A. 20-302bK.S.A. 12-4104
Judges and magistrates

District judges serve four-year terms. Each judicial district's voters decide how its judges are chosen: in some, the governor appoints from a nominating commission's list and judges then face retention votes; in others, judges run in partisan elections. District judges must have five years of law practice, but district magistrate judges need not be lawyers if they pass a Supreme Court exam.

K.S.A. 20-2901K.S.A. 20-2903K.S.A. 20-2908K.S.A. 20-334K.S.A. 20-337K.S.A. 12-4105

Read from the statutes and court rules cited, 2026-09-30. Some of this is medium confidence and still being checked. Ballotpedia counts 17 merit-selection districts and 14 partisan districts; kscourts.gov pages that would confirm it returned 403. Bond-schedule practice by jail deputy clerks comes from the earlier research, not a rule read this pass. Johnson County (District 10) Department of Corrections may run part of jail operations there; not checked. Misdemeanor defense outside the state board's felony mandate is not covered here.

What this county does differently

Pretrial practice

Mapping Pretrial Injustice listed its risk tool in 2021 as a county-specific tool (not named in the list).

MediaJustice and Movement Alliance Project, Mapping Pretrial Injustice county map (data as of fall 2021)

From Mapping Pretrial Injustice, a map compiled by MediaJustice and the Movement Alliance Project, advocacy groups that campaign against pretrial risk assessment tools. Its data is from fall 2021; CrimeDB uses it only where no court, government, or research list covers the county.

Police agencies

Agencies: FBI NIBRS master file 2025 batch headers; names from the FBI agency list, pulled 2026-09-29. An agency that serves several counties appears on each. Population served is the FBI's figure.

Crime and arrests

No figures yet

Reported offenses and arrests for Johnson County, counted by the agencies that serve it, appear here once the county series is published. NIBRS reporting here started as early as January 2000.