There are 102 counties in Illinois. The most populous of these is Cook County, the second-most populous county in the United States and the home of Chicago, while the least populous is Hardin County. The largest by land area is McLean County, while the smallest is Putnam County. Illinois's FIPS state code is 17 and its postal abbreviation is IL.

3 days ago · This Illinois County Map on Google Maps interactive tool prominently shows county lines as you explore the map. Along with county borders and roads, it also has options to show …

There are 102 counties in the state of Illinois. Gilbert du Motier, marquis de Lafayette (1757–1834), French military officer who was a key factor in the American and French …

A map of Illinois Counties with County seats and a satellite image of Illinois with County outlines.

This Map of Counties and County Seats in Illinois shows state borders, state names, Lake Michigan, state capital city, county borders, county names and county seats.

Jan 13, 2025 · The U.S. state of Illinois is divided into 102 Counties. Explore the Illinois County Map, all Counties list along with their County Seats in alphabetical order and their population, areas and the date of formation.

There are 102 counties in the State of Illinois. The Illinois Statutes provide for three types of county government: counties under township organization (84), counties under commission form (17), and counties under executive form (1). Cook County is the only home rule county in Illinois.

Welcome to our alphabetical list of counties in Illinois A-Z! In addition to a comprehensive list of the 102 counties in Illinois, at the bottom of this page, we answer questions like: How many counties is in Illinois? What is Illinois smallest county? …

May 11, 2024 · There are a total of 102 counties in the state of Illinois.

The Illinois Counties section of the gazetteer lists the cities, towns, neighborhoods and subdivisions for each of the 102 Illinois Counties. Also see Illinois County: ZIP Codes | Physical, Cultural & Historical Features | Census Data | Land, Farms, & Ranches.