Police Department in Johnson County, Illinois

Municipal police departments within a county operate independently from each other and from the county sheriff, each serving their respective city or town limits. There are 3 Police Department locations in Johnson County, Illinois.

Residents of Johnson County should be aware of jurisdiction boundaries — the city police handle incidents within city limits, while the county sheriff's office covers unincorporated areas of the county. Contacting the correct agency ensures the fastest response.

Residents of Johnson County can find their specific city police department by selecting their municipality below. For matters in unincorporated parts of Johnson County, the county sheriff's office is typically the appropriate agency to contact for law enforcement assistance.

You may also find Police Department locations in neighboring counties including Johnson, Saline, Pope.