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St. Clair County, IL

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St. Clair County, IL
  • Location TypeCounty
  • County SeatBelleville, IL
  • Population270,056
  • Land Area (Square Miles) 657.7599
  • Population Density (Per Square Mile) 410.6000

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Median Age

% Population African American

% Population Hispanic

% Population White

Population Density
(Persons per Square Mile)

Rural-Urban Continuum


Suggested Data Series

TitleLatest YearLatest ValueLatest Rank
Decennial Census Population (County)2010270,056240 of 3170
Decennial Census Population Per Square Mile (County)2010410.60320 of 3170
Percent of African American Population (County)201830.6%307 of 3131
Percent of Hispanic Population (County)20184.2%1612 of 3139
Persistent Poverty Counties (County)201300 of 0 - 1
Rural-Urban Continuum for Counties (County)201311 of 1 - 9
Unemployment Rate (County)20194.5%835 of 3140
Death Rate (Per 100,000) (County)2016946.102159 of 3105
Percent of Adults Physically Inactive (County)201631.4%714 of 3141
Age-Adjusted Rate of Diabetes per 1,000 Persons (County)20168.401768 of 3141
Medicare Part D Prescription Enrollment Rate (County)201836.1%2679 of 3137
Farmers' Markets (County)20163608 of 2249
Percent of Children Without a Market Within One Mile (County)201512.2%2247 of 3004
Percent of School-age Children in Poverty (County)201819.8%1417 of 3140
Total Public School Expenditures (County)2017$654,056,000.00211 of 3123
Number of Public Libraries (County)20171587 of 1287
Average Daily Maximum Heat Index (County)201198.1186 of 3103
Percentage of Days with a Good Air Quality Index (County)201968.0%896 of 1006
Second Highest 1-hour Carbon Monoxide Measurement (County)20191.8056 of 165
Greenhouse Gas Direct Emitting Facilities (County)20183563 of 1227
Average Fine Particulate Matter (County)201112.141378 of 3108
FEMA Public Assistance Grant Dollars Obligated for Disasters (County)2019$208,501.64419 of 826
Total Deposits in Banks (County)2016-2017$3,949,372,000.00308 of 3108
Property Taxes as Percent of Income: Five-Year Estimates (County)2006-20103.7%319 of 2773
Percent of Firms Which are Women Owned (County)201240.2%284 of 3093
Manufacturing Establishments with 5 to 9 Employees (County)201824414 of 1961
Inmates Executed, All Races (Cumulative Since 1977) (County)1977-2018468 of 198
Immigrant Households Entering County According to Tax Returns (County)2017-201821664 of 389
Estimated Veteran Population Under 45 Years Old (County)20108,355109 of 3143
Total Planted Acres (County)2019220,728.47932 of 3034
Online, Mail Order, and Television Retail Sales in 2009 Dollars (County)2050$134,000,000.00570 of 2709
Total Retail and Food Service Sales in 2009 Dollars (County)2050$3,935,000,000.00381 of 3108
Earnings in Management of Companies and Enterprises Occupations in 2009 Dollars (County)2050$34,000,000.00736 of 2178
Population (County)2050254,000363 of 3076
Per Capita Total Personal Income (County)2050$217,636.00808 of 3112
Total Employees (County)2050158,000356 of 3065
Population 18 to 24 Years Old (County)205019,000402 of 2216
African American Male Population 25 Years Old (County)2050362220 of 2780
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