Counties in New Hampshire
New Hampshire has 10 counties. Find yours from your location, or explore the map and the full list with seats, population, time zones and FIPS codes.
Updated · Data: U.S. Census Bureau
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New Hampshire has 10 counties, home to about 1,387,834 people. Sort the table by any column, or search by name or seat.
New Hampshire county map
County explorer: all 10 counties in New Hampshire
| County | Seat | Population | Land sq mi | People / sq mi | Median home | Time zone | FIPS |
|---|---|---|---|---|---|---|---|
| Hillsborough | Manchester and Nashua | 424,732 | 876.5 | 485 | $385,500 | Eastern | 33011 |
| Rockingham | Brentwood | 317,163 | 695.4 | 456 | $461,400 | Eastern | 33015 |
| Merrimack | Concord | 155,018 | 932.9 | 166 | $330,600 | Eastern | 33013 |
| Strafford | Dover | 131,743 | 367.5 | 358 | $332,400 | Eastern | 33017 |
| Grafton | Haverhill | 91,759 | 1,708.6 | 54 | $298,500 | Eastern | 33009 |
| Cheshire | Keene | 76,945 | 706.7 | 109 | $257,200 | Eastern | 33005 |
| Belknap | Laconia | 64,300 | 401.8 | 160 | $340,000 | Eastern | 33001 |
| Carroll | Ossipee | 51,259 | 931.9 | 55 | $348,900 | Eastern | 33003 |
| Sullivan | Newport | 43,529 | 537.9 | 81 | $236,300 | Eastern | 33019 |
| Coos | Lancaster | 31,386 | 1,794.6 | 17 | $169,600 | Eastern | 33007 |
Which New Hampshire cities are in more than one county?
- Tilton Northfield: Belknap County 61.5%, Merrimack County 38.5% of residents
Sources: Census TIGER/Line 2024; ACS 2019-2023 5-year; Wikidata, CC0 (seats); timezone-boundary-builder (time zones). Data as of November 1, 2026. Not affiliated with any government agency.
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