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Illinois: county data, all 102 of them.

12,694,798 residents across 102 county-equivalents, 321,239 business establishments, and 19,244 SBA approvals worth $11.73 bn. Every figure on this page is those counties summed, and every county has its own page.

32 state-level values · 102 county pages · underlined figures are computed by MMCG Analytics, not published by the agency

How many people live in Illinois?

  • Population12,694,798
  • Households5,036,449
  • Average household size2.52
  • County-equivalents102
  • People per square mile229

Illinois has 12,694,798 residents in 5,036,449 households across 102 county-equivalents, every one of which has its own data page below.

US Census Bureau, American Community Survey 5-Year Estimates, 2020-2024 5-year.

What is the Illinois economy?

  • Combined county product, 2024$1148.11 bn
  • County product per resident$90,439
  • Covered employment5,810,965
  • Average annual pay$75,660

The average annual pay of $75,660 is weighted by each county's covered employment, not averaged across counties, so a large labour market counts for more than a small one.

US Bureau of Economic Analysis, Regional, table CAGDP2, CAGDP2, through 2024. US Bureau of Labor Statistics, Quarterly Census of Employment and Wages, 2024 annual averages.

How many businesses are in Illinois?

  • Business establishments321,239
  • Establishments per 1,000 residents25.3
  • Employment at those establishments5,447,113
  • Annual payroll$395.94 bn

US Census Bureau, County Business Patterns, 2023.

Building permits in Illinois

  • Housing units permitted20,326
  • Permitted construction value$5.78 bn
  • Units permitted per 1,000 households4.0

US Census Bureau, Building Permits Survey, 2024 annual.

SBA loans in Illinois (7(a) and 504)

  • 7(a) approvals recorded13,420
  • 7(a) approval dollars$7.13 bn
  • Average 7(a) approval$531,038
  • 504 approvals recorded5,824
  • 504 approval dollars$4.60 bn
  • Average 504 approval$790,542
  • Counties with a 7(a) record94 of 102

US Small Business Administration, 7(a) FOIA release, FY2020 to FY2026 year to date, as of 2026-06-30. US Small Business Administration, 504 FOIA release, FY2010 to FY2026 year to date, as of 2026-06-30.

SBA loan default and charge-off rates in Illinois

  • 7(a) charge-off rate over resolved loans8.90 percent
  • Resolved 7(a) loans behind that rate2,565
  • 7(a) loans charged off229
  • 504 charge-off rate over resolved loans3.50 percent
  • Resolved 504 loans behind that rate1,792
  • 504 loans charged off63

Of the 2,565 Illinois 7(a) loans that have reached a final outcome, 8.90 percent were charged off. The rate is taken over resolved loans only, because a loan still running has not yet succeeded or failed.

Compare against the national and state SBA charge-off rates, computed the same way over resolved loans only.

US Small Business Administration, 7(a) FOIA release, FY2020 to FY2026 year to date, as of 2026-06-30. US Small Business Administration, 504 FOIA release, FY2010 to FY2026 year to date, as of 2026-06-30.

How large is Illinois?

  • Land area55,518 sq mi
  • County-equivalents102
  • People per square mile229

US Census Bureau county boundary geometry, TIGER, adjacency computed from shared boundary vertices, TIGER county boundaries. US Census Bureau, American Community Survey 5-Year Estimates, 2020-2024 5-year.

The largest counties in Illinois.

Illinois county-equivalents by population, with the figures a site search compares them on
GeographyPopulationMedian incomeEstablishmentsCounty GDPSBA approvals
Cook County5,182,090$83,498134,513$546.44 bn8,581
DuPage County930,024$112,09634,121$129.73 bn2,344
Lake County714,223$110,41620,076$82.87 bn1,284
Will County701,462$109,98417,085$50.33 bn1,213
Kane County517,255$103,16313,537$37.06 bn1,158
McHenry County312,591$104,8028,140$15.98 bn661
Winnebago County283,292$65,8376,286$18.80 bn389
Madison County264,238$75,7935,659$16.58 bn302
St. Clair County253,694$73,8544,973$16.13 bn260
Champaign County208,741$63,6834,237$15.45 bn216

Counties

All 102 Illinois county-equivalents.

Illinois counties: population, income, establishments and SBA activity
GeographyPopulationMedian incomeEstablishmentsCounty GDPSBA approvalsLand area, sq mi
Adams County64,754$66,2201,787$4.66 bn45855
Alexander County4,875$47,04375$273.5 mNone recorded236
Bond County16,716$65,959303$781.2 m8380
Boone County53,230$84,571890$1.97 bn45281
Brown County6,322$67,917108$624.0 m4306
Bureau County32,866$69,257699$1.60 bn12869
Calhoun County4,330$93,20377$131.1 m2254
Carroll County15,576$60,758363$761.5 m10445
Cass County12,784$68,125241$883.5 m1376
Champaign County208,741$63,6834,237$15.45 bn216996
Christian County33,538$62,611709$1.97 bn31709
Clark County15,266$72,927335$715.5 m2501
Clay County13,052$60,417322$699.4 m2468
Clinton County36,954$86,588913$1.58 bn29474
Coles County46,777$56,4781,112$3.51 bn22508
Cook County5,182,090$83,498134,513$546.44 bn8,581945
Crawford County18,511$71,674411$1.66 bn5444
Cumberland County10,334$73,327178$1.83 bn3346
De Witt County15,373$71,678343$1.63 bn7398
DeKalb County100,703$70,7241,975$5.66 bn138631
Douglas County19,751$77,320575$1.44 bn11417
DuPage County930,024$112,09634,121$129.73 bn2,344327
Edgar County16,535$59,941334$1.04 bn14623
Edwards County6,075$60,519132$320.6 mNone recorded222
Effingham County34,522$80,4041,263$3.08 bn34479
Fayette County21,315$60,944477$770.4 m9716
Ford County13,406$62,439343$1.12 bnNone recorded486
Franklin County37,323$56,740696$1.36 bn22409
Fulton County33,020$60,599596$1.14 bn6866
Gallatin County4,819$59,21982$172.5 m4323
Greene County11,683$62,192215$430.9 m7543
Grundy County53,219$92,2351,202$6.04 bn80418
Hamilton County7,916$65,746175$478.3 m6435
Hancock County17,281$65,865365$824.4 m11794
Hardin County3,605$54,27155$125.5 m2178
Henderson County6,193$62,227105$224.5 mNone recorded379
Henry County48,643$71,9111,037$2.05 bn39823
Iroquois County26,449$66,255625$1.42 bn31,117
Jackson County53,064$48,7631,196$3.30 bn33584
Jasper County9,180$74,755226$645.6 m5495
Jefferson County36,550$63,118882$2.43 bn72571
Jersey County21,274$80,361404$672.9 m18369
Jo Daviess County21,851$73,993673$1.14 bn14601
Johnson County13,376$62,528175$328.9 m4344
Kane County517,255$103,16313,537$37.06 bn1,158520
Kankakee County106,635$71,2812,268$8.53 bn80677
Kendall County137,675$111,6012,548$5.41 bn217320
Knox County49,046$57,030968$2.45 bn28716
Lake County714,223$110,41620,076$82.87 bn1,284444
LaSalle County108,714$73,0452,523$7.67 bn781,135
Lawrence County15,031$55,324247$661.2 m4372
Lee County33,869$70,292690$2.17 bn26725
Livingston County35,565$73,790826$2.89 bn111,044
Logan County27,713$66,358536$1.34 bn15618
Macon County101,849$62,6662,241$9.05 bn138581
Macoupin County44,350$70,805813$1.53 bn39863
Madison County264,238$75,7935,659$16.58 bn302716
Marion County37,000$61,240863$1.76 bn23572
Marshall County11,647$71,585235$686.6 m5387
Mason County12,745$62,845255$633.8 m1539
Massac County13,865$65,116217$508.9 m4237
McDonough County26,920$52,795611$1.46 bn12589
McHenry County312,591$104,8028,140$15.98 bn661603
McLean County171,556$79,9053,481$16.91 bn1841,183
Menard County12,095$82,176207$364.2 m12314
Mercer County15,495$74,182258$589.6 m5561
Monroe County35,036$102,880875$1.35 bn65385
Montgomery County27,942$63,620676$2.02 bn24704
Morgan County33,021$66,306759$2.06 bn40569
Moultrie County14,424$71,784336$981.0 m19336
Ogle County51,495$82,1321,053$3.85 bn37759
Peoria County179,645$65,1084,168$16.97 bn151619
Perry County20,639$62,118378$873.3 m7442
Piatt County16,695$94,811339$719.1 m7439
Pike County14,469$59,777349$824.6 m3831
Pope County3,739$60,05049$85.1 m2369
Pulaski County5,015$42,46386$222.7 m5199
Putnam County5,601$75,590133$427.9 m1160
Randolph County30,058$68,131636$2.02 bn12576
Richland County15,598$62,455423$834.2 m2360
Rock Island County142,757$67,1592,992$12.61 bn93428
Saline County23,213$53,117538$1.12 bn22380
Sangamon County194,947$75,3574,925$15.67 bn343868
Schuyler County6,787$65,948161$346.0 m5437
Scott County4,937$66,70584$207.8 m3251
Shelby County20,720$72,095422$1.10 bn9759
St. Clair County253,694$73,8544,973$16.13 bn260658
Stark County5,308$62,878116$340.0 m1288
Stephenson County43,768$64,0431,003$2.49 bn36565
Tazewell County130,290$77,9822,772$7.84 bn108649
Union County16,997$55,728352$532.8 m4413
Vermilion County72,386$56,8771,300$4.18 bn68898
Wabash County11,119$57,086249$451.0 mNone recorded223
Warren County16,447$67,385351$1.10 bn1542
Washington County13,627$78,224364$1.26 bn6563
Wayne County15,973$55,521374$679.4 m3714
White County13,619$54,813340$724.4 m12495
Whiteside County54,947$67,5001,158$2.98 bn29684
Will County701,462$109,98417,085$50.33 bn1,213837
Williamson County66,876$65,6041,597$3.99 bn59420
Winnebago County283,292$65,8376,286$18.80 bn389513
Woodford County38,312$91,483793$1.78 bn17528

The register

Every source behind these 102 pages.

SourcePeriod coveredLicence
US Census Bureau, American Community Survey 5-Year Estimates2020-2024 5-yearUS Census Bureau, public domain
US Census Bureau, Population Estimates Program, Vintage 2024Vintage 2024, estimates 2020 to 2024US Census Bureau, public domain
US Bureau of Economic Analysis, Regional, table CAGDP2CAGDP2, through 2024US Bureau of Economic Analysis, public domain
US EPA, Map of Radon Zones, county spreadsheet2024-05 publication, EPA 402/A-16/001US EPA, public domain
FEMA OpenFEMA, NFIP Community Status BookCommunity Status Book, as retrievedFEMA OpenFEMA, public domain
US Small Business Administration, 7(a) FOIA releaseFY2020 to FY2026 year to date, as of 2026-06-30FOIA release, public domain
US Small Business Administration, 504 FOIA releaseFY2010 to FY2026 year to date, as of 2026-06-30FOIA release, public domain
US Census Bureau county boundary geometry, TIGER, adjacency computed from shared boundary verticesTIGER county boundariesUS Census Bureau, public domain
US Census Bureau, County Business Patterns2023US Census Bureau, public domain
US Bureau of Labor Statistics, Quarterly Census of Employment and Wages2024 annual averagesUS BLS, public domain
US Census Bureau, Building Permits Survey2024 annualUS Census Bureau, public domain
US Internal Revenue Service, Statistics of Income county migration flows2021 to 2022 filing yearsIRS SOI, public domain

An Illinois statutory guide is in preparation.

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