St. Clair County, IL
Demographic and economic profile of St. Clair County, IL, sourced from the US Census Bureau (American Community Survey) via Data USA.
AI Overview
St. Clair County, IL, located in the Metro East region across the Mississippi River from St. Louis, has a workforce of roughly 161,000 with 92.7% holding at least a high school diploma and 30.7% holding a bachelor's degree or higher. Median worker earnings stand at $41,417 against a median home value of $168,800 and median gross rent of $1,032/month, indicating relatively low occupancy costs. The county's population has contracted 3.3% over five years, unemployment sits at 5.7%, and a labor force participation rate of 63.4% points to a moderate share of the working-age population actively engaged in the market.
Claude Sonnet 4.6 · generated Jul 6, 2026 · derived from cached Census, BEA & ACS data on this page
Population Growth (5-year)
-3.3% since 2018
St. Clair County lost population at this rate over the prior 5-year ACS5 window.
Demographics
Race & Ethnicity
- White Alone152,523 (60.1%)
- Black or African American Alone70,726 (27.9%)
- Two Races Excluding Some Other Race, & Three or More Races13,857 (5.5%)
- Two Races Including Some Other Race6,009 (2.4%)
- Some Other Race Alone5,705 (2.2%)
- Asian Alone4,174 (1.6%)
Top Languages Spoken at Home
- 1.Spanish6,860
- 2.Other Indo-European1,212
- 3.German or other West Germanic870
- 4.Arabic866
- 5.Tagalog (incl. Filipino)611
Economy
Cost of Living Index
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Not yet cached
Top Industries
- 1.Educational Services, & Health Care & Social Assistance28,969
- 2.Professional, Scientific, & Management, & Administrative & Waste Management Services14,441
- 3.Retail Trade (Group)11,877
- 4.Arts, Entertainment, & Recreation, & Accommodation & Food Services11,508
- 5.Manufacturing (Group)10,319
Top Occupations
- 1.Management, Business, Science, & Arts Occupations46,898
- 2.Sales & Office Occupations23,612
- 3.Service Occupations20,731
- 4.Production, Transportation, & Material Moving Occupations17,148
- 5.Natural Resources, Construction, & Maintenance Occupations8,339
Specialized Industries (Location Quotient)
- 1.Public Administration (LQ 1.48×)8,195
- 2.Transportation, Warehousing, & Utilities (LQ 1.41×)9,662
- 3.Arts, Entertainment, Recreation, & Accommodation (LQ 1.16×)11,962
- 4.Educational Services & Health Care (LQ 0.99×)27,109
- 5.Retail Trade (LQ 0.98×)12,501
Housing
Education
Workforce
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More on FDI Connect
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Data: US Census Bureau American Community Survey, served via Data USA and the Census Bureau API. See each metric tile for the specific dataset.