CITY · IN

What county is South Bend, IN in?

South Bend, IN is mostly in St. Joseph County. County FIPS code 18141, population 272,848 (2023 estimate).

County details

City: South Bend, Indiana
Primary county: St. Joseph County
FIPS code: 18141
County population: 272,848

Some cities extend into more than one county. South Bend is placed in the county that contains its center. For a specific address, use the address lookup.

Questions

What county is South Bend in?

South Bend, IN is mostly in St. Joseph County.

What is the county seat of St. Joseph County?

County seats are not part of the data on this site. Check the county’s official website.

Can a city be in two counties?

Yes. Large cities such as Houston and Atlanta cross county lines. The address lookup shows the exact county for any street address.

Sources: U.S. Census Bureau geographic reference files; FCC Area API; Census Bureau Population Estimates, Vintage 2023. Last reviewed 2026-10-27.