CITY · NH

What county is Manchester, NH in?

Manchester, NH is mostly in Hillsborough County. County FIPS code 33011, population 427,354 (2023 estimate).

County details

City: Manchester, New Hampshire
Primary county: Hillsborough County
FIPS code: 33011
County population: 427,354

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

Questions

What county is Manchester in?

Manchester, NH is mostly in Hillsborough County.

What is the county seat of Hillsborough 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.