Portsmouth city, New Hampshire
Official LSAD Designation: Portsmouth city • Census GEOID: 3362900
• Rockingham County
Portsmouth city is an incorporated city in Rockingham County, New Hampshire. According to official records from the Census (2025), Portsmouth city had an estimated population of 23,028 residents. Official Census Bureau geographic records classify this community under LSAD designation Portsmouth city (GEOID 3362900).
Local Government Administration U.S. Census Bureau GMAF
City Of Portsmouth
Municipal
Official Title:
Mayor
Address:
1 JUNKINS AVE, UNIT 1, PORTSMOUTH NH 03801-4555
County Of Rockingham
County
Official Title:
Executive Commissioner
Address:
119 NORTH RD, BRENTWOOD NH 03833-6628
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 23,028 | 2025 |
| Median Household Income | $106,219 | 2020-2024 |
| Median Home Value | $688,500 | 2020-2024 |
| Land Area | 15.66 sq mi | Gazetteer (2026) |
| Civic & Public Services | Hospitals, Libraries, Colleges | CMS / IMLS / IPEDS |
| Schools & Districts | NCES Directory Listings | Provided by k12guides.com |
| Nearby Airports | Landing Facilities | Provided by airport-data.com |
| Climate & Weather | NOAA 30-Year Normals | 1991–2020 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).