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County · GEOID 18141

St. Joseph County, IN ZIP codes

25 ZIP/ZCTAs intersecting this county.

ACS 2023 population

272,574

Median household income

$64,885

Median home value

$179,800

U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: County St. Joseph County (GEOID 18141). Methodology

Combined population of ZIP/ZCTAs intersecting this county: 332,937 (25 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

ZIP/ZCTA overlap with St. Joseph County

Population overlap

Share of each ZIP/ZCTA’s population located within St. Joseph 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 St. Joseph County

USPS associates these ZIPs with St. Joseph County

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