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County · GEOID 17055

Franklin County, IL ZIP codes

19 ZIP/ZCTAs intersecting this county.

ACS 2023 population

37,541

Median household income

$53,471

Median home value

$87,700

U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: County Franklin County (GEOID 17055). Methodology

Combined population of ZIP/ZCTAs intersecting this county: 45,564 (19 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

Franklin County, IL ZIP code map

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

Population overlap

Share of each ZIP/ZCTA’s population located within Franklin 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 Franklin County

USPS associates these ZIPs with Franklin County

These codes list Franklin County as a primary or acceptable city. They are not used for the ACS headline.