County permits

Knox County

Knox County issues permits only for unincorporated areas. Inside an incorporated city? Pick the city below — its building department handles your permit.

§ 01 Unincorporated

Unincorporated Knox County.

If your property isn't inside an incorporated city, the county permit office handles your application directly.

Permit authority: Knox County Zoning Department
Website: Permit authority website ↗
Phone: 309-345-3840
Email: melissa.wheeler@knoxcountyil.gov
Address: Knox County Annex, Suite 1, 121 South Prairie Street, Galesburg, IL 61401

Full unincorporated Knox County permit guide →

§ 02 Jurisdictions

Cities in Knox County

Click any city for its full permit guide — authority, fees, application steps, inspections, and exempt work.

§ 03 County navigation

Information last verified for Knox County, Illinois. Permit rules and fees change frequently — verify current requirements with the issuing department before applying. Jaspector is an educational reference, not legal advice.