New Hampshire County Map With Cities
By Marko Visic · Updated Oct 5, 2026
New Hampshire has 10 counties, covering 8,954 square miles of land. The Census Bureau estimates its population at 1,415,342 as of July 1, 2025. The largest county by land area, Coos County, is also the least populous; the most populous is Hillsborough County.
Tap or click any county for details. Need a printable version? Blank New Hampshire map (PDF/PNG/SVG).
All 10 New Hampshire counties
| County | FIPS code | Population (July 1, 2025) ▼ | Change since April 2020 | Land area (sq mi) | People per sq mi | Median household income (2020–2024) |
|---|---|---|---|---|---|---|
| Hillsborough County | 33011 | 433,415 | +2.5% | 877 | 494 | $103,545 |
| Rockingham County | 33015 | 324,077 | +3.1% | 696 | 466 | $118,331 |
| Merrimack County | 33013 | 158,078 | +2.8% | 933 | 169 | $97,004 |
| Strafford County | 33017 | 135,043 | +3.2% | 367 | 367 | $88,570 |
| Grafton County | 33009 | 93,225 | +2.3% | 1,709 | 55 | $88,261 |
| Cheshire County | 33005 | 78,269 | +2.4% | 707 | 111 | $83,329 |
| Belknap County | 33001 | 65,147 | +2.3% | 402 | 162 | $92,783 |
| Carroll County | 33003 | 52,784 | +5.3% | 932 | 57 | $86,463 |
| Sullivan County | 33019 | 43,961 | +2.1% | 538 | 82 | $80,858 |
| Coos County | 33007 | 31,343 | +0.2% | 1,795 | 17 | $57,677 |
FIPS code: the Census Bureau’s five-digit county ID, a two-digit state code plus a three-digit county code. It is not a ZIP code.
How many counties does New Hampshire have?
New Hampshire has 10 counties covering 8,954 square miles. The state was admitted to the Union in 1788 as the 9th state.
The largest county by land area is Coos County at 1,795 square miles, home to 31,343 residents. The most populous is Hillsborough County with 433,415 residents — a density of 494 people per square mile. Despite its size, Coos County is also the least populous, with 31,343 residents.
New Hampshire’s capital is Concord, while the largest city is Manchester.
Related resources
Download a printable outline of New Hampshire’s county boundaries from our blank map of New Hampshire page — available in SVG, PNG, and PDF.
Use the What County Am I In? tool to detect which New Hampshire county a GPS location or address falls in, or the Address to County Lookup for batch input.
For demographic radius analysis, the Find ZIP Codes in Radius and Population Within Radius tools let you draw a circle around any New Hampshire address and see every ZIP code and the total population inside.
Two SimpleMapLab studies cover New Hampshire specifically: the 100-mile radius around Concord measures how much of the state lives within 100 miles of its capitol, and the loneliest town in New Hampshire ranks the state’s most isolated inhabited place. The county-counts blog post puts New Hampshire’s 10 counties in national context.
Frequently asked questions
- County Population Totals, Vintage 2025: estimates for July 1, 2025, released March 2026
- Gazetteer Files, 2026: county land and water area
- American Community Survey 5-Year Estimates, 2020–2024: median household income (table B19013)
- County boundaries on the map: US Atlas TopoJSON build of the US Census Bureau’s TIGER/Line shapefiles. All figures are US Census Bureau data in the public domain.