County demographics · Illinois

Macoupin County, Illinois demographics

Macoupin County, Illinois (county FIPS 17117) has a median household income of $70,805 (±$4,838) and a total population of 44,350 in the American Community Survey 5-year estimates for 2020-2024.

Margins of error are at the 90% confidence level. The figures describe 2020-2024 (dollars in 2024 dollars), not the present. 28 ZIP Code Tabulation Areas overlap the county (Census 2020).

Data as of Oct 22, 2026 (Olympus publication) · Markdown version

  • Values are ACS 5-year estimates for 2020-2024 (dollars in 2024 dollars), not current figures.
  • ZCTA-county overlaps come from the Census 2020 relationship file and use 2020 counties, by land area; Connecticut uses its legacy counties, not the planning regions in ACS 2022+.

ACS 5-year estimates, 2020-2024

Census American Community Survey 5-year estimates for 2020-2024, with 90% margins of error as published by the Census Bureau.

MetricEstimateMargin of error (90%)ACS table
Total population44,350none (controlled estimate)B01003
Median age44.2 years±0.3 yearsB01002
Households17,576±364B11001
Median household income (inflation-adjusted to the final ACS year)$70,805±$4,838B19013
Median value of owner-occupied housing units$138,200±$7,868B25077
Median gross rent$801±$45B25064
Owner-occupied share of occupied housing units78.5%none (derived from several estimates)B25003 (derived)
Renter-occupied share of occupied housing units21.5%none (derived from several estimates)B25003 (derived)
High school graduate or higher (age 25+)91.4%none (derived from several estimates)B15003 (derived)
Bachelor's degree or higher (age 25+)20.3%none (derived from several estimates)B15003 (derived)
Share of people below the poverty level13.1%none (derived from several estimates)B17001 (derived)
Unemployment rate (civilian labor force)3.7%none (derived from several estimates)B23025 (derived)
  • Dollar values are in 2024 inflation-adjusted dollars.
  • Percentages' margins of error are in percentage points (pp).

Geography

MeasureValue
County FIPS17117
Land area862.97 sq mi
Water area4.73 sq mi
Population density51 per sq mi of land
Geography vintage2024 Gazetteer

ZIP codes (ZCTAs) in this county

ZCTAs that overlap the county in the Census 2020 ZCTA to county relationship file, largest share of the county's land first.

ZCTAShare of county landShare of ZCTA landCounty is the ZCTA's primary county
6262619.8%100%Yes
626859.5%100%Yes
626748.7%100%Yes
626408.4%96.9%Yes
620146.9%100%Yes
620335.4%100%Yes
626494.5%100%Yes
626304.4%94.5%Yes
626904.1%62.7%Yes
626674%94.9%Yes
620563.5%28%
620693.3%97.3%Yes
620883.2%63.5%Yes
620123.1%44.6%
620632.9%47.8%
625722.3%49.1%
620442.1%19.3%
620791%81.5%Yes
625600.8%11.2%
620740.4%8%
620020.3%7.2%
626380.3%4.4%
620090.3%100%Yes
620930.3%100%Yes
620850.1%100%Yes
620230.1%100%Yes
626720.1%100%Yes
620210.1%2.3%

Sources

Get this data from the API

The same figures, with provenance on every value, from the API (free API key, reference) or from an AI agent through the Olympus MCP server.

curl
curl -s "https://api.olympus.new-odyssey.com/v1/geo-demographics/counties/17117" -H "X-API-Key: $OLYMPUS_API_KEY"
MCP tool call
get_us_demographics {"county_fips":"17117"}

About this data