Business Initiative

Illinois Counties

Welcome to our comprehensive guide to Illinois's counties! The Prairie State's 102 counties represent diverse business environments, from Chicago's global marketplace to agricultural powerhouses downstate. Each county offers unique advantages for businesses across various sectors including finance, manufacturing, agriculture, and technology.

Business Quick Facts About Illinois

  • Home to 37 Fortune 500 company headquarters
  • Extensive transportation infrastructure including major rail, air, and shipping hubs
  • Leading center for financial trading and technology innovation
  • Diverse economy spanning manufacturing, agriculture, and professional services
  • Robust R&D tax credits and business development incentives

Below you'll find links to detailed information about each county in Illinois, including economic development resources, tax incentives, workforce data, and industry-specific opportunities. Each county page provides essential information for business planning and expansion.

County Directory