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County · GEOID 17181

Union County, IL ZIP codes

13 ZIP/ZCTAs intersecting this county.

ACS 2023 population

16,972

Median household income

$56,420

Median home value

$131,700

U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: County Union County (GEOID 17181). Methodology

Combined population of ZIP/ZCTAs intersecting this county: 28,122 (13 ZIPs).

Combined population of ZIP/ZCTAs intersecting this county. Each intersecting ZIP contributes its full ZCTA population; overlap percents are descriptive only. This is not the Census county ACS headline above. Methodology

Union County, IL ZIP code map

Census ZIP Code Tabulation Areas in Union County, IL
ZIP Code Tabulation Areas inside Union County, IL. Boundaries: U.S. Census Bureau. Methodology · Data sources
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ZIP/ZCTA overlap with Union County

Population overlap

Share of each ZIP/ZCTA’s population located within Union County, based on ZIP Code Database county-overlap data. This is a population measure, not land-area overlap or the Census county population.

ZIP Code Database county-overlap table, field percent_of_zip_population_in_county, keyed by county_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology

ZIP codes intersecting Union County