About Illinois on hearthmap
hearthmap aggregates housing, demographic, school, crime, and environmental data for every county, town, and ZIP code in Illinois. Use the interactive map to compare areas side by side, filter by what matters to you, or rank places with a custom match score.
Data is refreshed periodically from public sources including the U.S. Census Bureau, the National Center for Education Statistics, the FBI Uniform Crime Reporting Program, the EPA, Zillow, and Redfin. Source attribution is shown on each metric in the app.
Counties in Illinois
102 counties, ranked by population.
- 1Cook5,182,090
- 2DuPage930,024
- 3Lake714,223
- 4Will701,462
- 5Kane517,255
- 6McHenry312,591
- 7Winnebago283,292
- 8Madison264,238
- 9St. Clair253,694
- 10Champaign208,741
- 11Sangamon194,947
- 12Peoria179,645
- 13McLean171,556
- 14Rock Island142,757
- 15Kendall137,675
- 16Tazewell130,290
- 17LaSalle108,714
- 18Kankakee106,635
- 19Macon101,849
- 20DeKalb100,703
- 21Vermilion72,386
- 22Williamson66,876
- 23Adams64,754
- 24Whiteside54,947
- 25Boone53,230
- 26Grundy53,219
- 27Jackson53,064
- 28Ogle51,495
- 29Knox49,046
- 30Henry48,643
- 31Coles46,777
- 32Macoupin44,350
- 33Stephenson43,768
- 34Woodford38,312
- 35Franklin37,323
- 36Marion37,000
- 37Clinton36,954
- 38Jefferson36,550
- 39Livingston35,565
- 40Monroe35,036
- 41Effingham34,522
- 42Lee33,869
- 43Christian33,538
- 44Morgan33,021
- 45Fulton33,020
- 46Bureau32,866
- 47Randolph30,058
- 48Montgomery27,942
- 49Logan27,713
- 50McDonough26,920
- 51Iroquois26,449
- 52Saline23,213
- 53Jo Daviess21,851
- 54Fayette21,315
- 55Jersey21,274
- 56Shelby20,720
- 57Perry20,639
- 58Douglas19,751
- 59Crawford18,511
- 60Hancock17,281
- 61Union16,997
- 62Bond16,716
- 63Piatt16,695
- 64Edgar16,535
- 65Warren16,447
- 66Wayne15,973
- 67Richland15,598
- 68Carroll15,576
- 69Mercer15,495
- 70De Witt15,373
- 71Clark15,266
- 72Lawrence15,031
- 73Pike14,469
- 74Moultrie14,424
- 75Massac13,865
- 76Washington13,627
- 77White13,619
- 78Ford13,406
- 79Johnson13,376
- 80Clay13,052
- 81Cass12,784
- 82Mason12,745
- 83Menard12,095
- 84Greene11,683
- 85Marshall11,647
- 86Wabash11,119
- 87Cumberland10,334
- 88Jasper9,180
- 89Hamilton7,916
- 90Schuyler6,787
- 91Brown6,322
- 92Henderson6,193
- 93Edwards6,075
- 94Putnam5,601
- 95Stark5,308
- 96Pulaski5,015
- 97Scott4,937
- 98Alexander4,875
- 99Gallatin4,819
- 100Calhoun4,330
- 101Pope3,739
- 102Hardin3,605
County rankings in Illinois
Every county in Illinois, ranked on one decision metric at a time.
- 01Cheapest home pricesCheapest Counties to Buy a House in Illinois
- 02Lowest monthly housing paymentCounties With the Lowest Monthly Housing Payment in Illinois
- 03Lowest property taxLowest Property Taxes in Illinois by County
- 04Cheapest homeowners insuranceCounties With the Cheapest Homeowners Insurance in Illinois
- 05Cheapest childcare costCounties With the Cheapest Childcare in Illinois
- 06Lowest natural disaster riskLowest Natural Disaster Risk Counties in Illinois
- 07Lowest flood riskLowest Flood Risk Counties in Illinois
- 08Lowest wildfire riskLowest Wildfire Risk Counties in Illinois
- 09Safest countiesSafest Counties (Lowest Violent Crime) in Illinois
- 10Best school ratingsIllinois School Rankings by County
- 11Highest household incomeCounties With the Highest Household Income in Illinois
- 12Shortest commute timeCounties With the Shortest Commute in Illinois
- 13Fastest-selling homesCounties Where Homes Sell Fastest in Illinois
Illinois at a glance: frequently asked questions
- What is the population of Illinois?
- Illinois has a population of 12,694,798 based on the most recent US Census estimate.
- What is the median home price in Illinois?
- The median home value in Illinois is $298,585. Hover any county on the map for that county's value, or open Compare to put two states side by side.
- What is the median household income in Illinois?
- Median household income in Illinois is $83,390 per year, sourced from the US Census American Community Survey.
- How many counties are in Illinois?
- Illinois has 102 counties. Each county page on hearthmap shows housing, school, crime, and demographic data town by town.
- What is the average commute time in Illinois?
- The average one-way commute in Illinois is 27.8 minutes, based on US Census ACS journey-to-work data.
Compare Illinois with other places
Put up to four states, counties, towns, or ZIPs side by side on income, housing, crime, education, and more.