County commissioner boards across Illinois govern the administration of county services, including road maintenance, public health, social services, and land use planning. Illinois law defines the structure, powers, and term lengths for county commissioners across the state's counties.

Commissioners locations are available in 10 cities across Illinois. They are spread across 7 counties.

Cities with the highest concentration include Chicago, Glenview, Mattoon, reflecting the county seats where commissioner offices are headquartered and where most county services are centralized.

Residents of Illinois should know that their county commissioners set local tax levies, manage county infrastructure, and make decisions about land use and public services that affect unincorporated areas of the county.

Commissioners by Counties

Residents of Illinois can look up their county commissioner by district using their county's official website, review meeting agendas and minutes, or submit public comments to participate in county governance on issues that matter to their community.

Browse Commissioners by county across Illinois to find the nearest location.