CountyAtlas New Hampshire
New Hampshire County Map with Cities — All 10 Counties
All 10 of New Hampshire's counties, mapped from official U.S. Census boundaries with population, income, and unemployment for every one. Colour the map by any measure, tap a county for its data, or download a print-ready copy.
Tap any county for its population, income, and more.
New Hampshire at a glance
- Scale. New Hampshire is divided into 10 counties across 8,954 sq mi of land — an average of 895 sq mi each. Census TIGER
- People. Its counties are home to 1,402,054 residents — an average of 140,205 each, or 157 per square mile statewide. Census PEP 2023
- Water. Another 396 sq mi is water — 4.2% of the state’s area, led by Rockingham County. Census TIGER
New Hampshire’s 10 counties, by the numbers
Every county’s population, median household income, unemployment, density, and land area — sortable by any column, so you can find yours or rank by what matters to you. A few patterns run through the data:
- Concentrated. Half of New Hampshire’s 1,402,054 residents live in just 2 of 10 counties, and the five largest hold 80.7% of the total. Census PEP 2023
- Income tracks poverty. The gap from richest to poorest runs 1.8×, and the 5 highest-income counties average 7.4% in poverty against 10.0% for the 5 lowest. Census SAIPE 2023
- Mostly small. Half of New Hampshire’s counties have fewer than 85,425 residents, and half report a median household income below $84,385. Census PEP 2023 · SAIPE 2023
- Lopsided density. Only 5 of 10 counties are denser than New Hampshire’s statewide average of 157 people per square mile — the rest are more rural. Census PEP 2023 · TIGER
| Belknap County | 65,027 | $91,333 | 2.4% | 162/sq mi | 402 sq mi | Laconia |
| Carroll County | 52,448 | $77,303 | 2.3% | 56/sq mi | 932 sq mi | Ossipee |
| Cheshire County | 77,703 | $84,008 | 2.6% | 110/sq mi | 707 sq mi | Keene |
| Coos County | 31,372 | $59,592 | 2.9% | 17/sq mi | 1,795 sq mi | Lancaster |
| Grafton County | 93,146 | $81,537 | 2.3% | 55/sq mi | 1,709 sq mi | Haverhill |
| Hillsborough County | 427,354 | $103,181 | 2.9% | 488/sq mi | 877 sq mi | Manchester; Nashua |
| Merrimack County | 157,103 | $91,357 | 2.3% | 168/sq mi | 933 sq mi | Concord |
| Rockingham County | 320,689 | $109,660 | 2.8% | 461/sq mi | 696 sq mi | Brentwood |
| Strafford County | 133,243 | $84,762 | 2.3% | 363/sq mi | 367 sq mi | Dover |
| Sullivan County | 43,969 | $74,730 | 2.3% | 82/sq mi | 538 sq mi | Newport |
All 10 counties, sortable by any column — click a heading. A suppressed estimate (coefficient of variation ≥ 0.30) shows a marker, never a guess. County seats are from Wikidata (CC0), each validated to a Census place inside its county; a county with no validated seat is left blank. See the methodology.
Download & print this New Hampshire map
Cities in New Hampshire
New Hampshire has 13 incorporated cities. The largest is Manchester in Hillsborough County with 115,415 residents. Use the search on the map above to find any city and highlight the county it sits in.
| Manchester | Hillsborough County | 115,415 |
| Nashua | Hillsborough County | 91,131 |
| Concord | Merrimack County | 44,219 |
| Dover | Strafford County | 33,070 |
| Rochester | Strafford County | 32,866 |
| Keene | Cheshire County | 22,923 |
| Portsmouth | Rockingham County | 22,332 |
| Laconia | Belknap County | 16,982 |
| Lebanon | Grafton County | 14,759 |
| Claremont | Sullivan County | 13,054 |
| Somersworth | Strafford County | 12,060 |
| Berlin | Coos County | 9,473 |
| Franklin | Merrimack County | 8,757 |
A city can span more than one county; each is listed in its primary county — the one its center falls in.
Which New Hampshire county is the richest, largest, most crowded? The answers
- New Hampshire’s highest median household income is in Rockingham County ($109,660); the lowest is in Coos County ($59,592). Census SAIPE 2023
- New Hampshire’s most populous county is Hillsborough County (427,354); the least populous is Coos County (31,372) — a 14× spread. Census PEP 2023
- New Hampshire’s largest county by land area is Coos County (1,795 sq mi); the smallest is Strafford County (367 sq mi). Census TIGER
- New Hampshire’s highest population density is in Hillsborough County (488/sq mi); the lowest is in Coos County (17/sq mi). Census PEP 2023 · TIGER
- New Hampshire’s highest poverty rate is in Coos County (13.5%); the lowest is in Rockingham County (5.4%). Census SAIPE 2023
- In New Hampshire, unemployment is highest in Coos County (2.9%) and lowest in Carroll County (2.3%), for May 2026. BLS LAUS
- New Hampshire’s highest median age is in Carroll County (54.2); the lowest is in Strafford County (37.9). Census ACS 2019–2023
- New Hampshire’s highest share of bachelor’s degrees is in Grafton County (44.8% of adults); the lowest is in Coos County (20.2%). Census ACS 2019–2023
Every figure is a current official estimate from the source named — not a crowd-sourced or copied value. Suppressed estimates (coefficient of variation ≥ 0.30) are omitted, never guessed. See the full methodology.
New Hampshire counties: common questions
How many counties are in New Hampshire?
New Hampshire has 10 counties covering 8,954 sq mi and about 1.4M residents. Every one is on the map above and in the table below.
What is the largest county in New Hampshire?
It depends on the measure. By land area it’s Coos County (1,795 sq mi); by population it’s Hillsborough County (427,354 residents).
What county is Manchester in?
Manchester (population 115,415) is in Hillsborough County. Use the search on the map to find any New Hampshire city’s county.
What is the richest county in New Hampshire?
By median household income, Rockingham County is the richest at $109,660; the poorest is Coos County at $59,592 (Census SAIPE 2023).
What is the most populous county in New Hampshire?
Hillsborough County, with 427,354 residents — about 30.5% of New Hampshire’s people, and 14× the least populous, Coos County (31,372).
Sources & vintages
- Population — PEP Vintage 2023 (July 1, 2023) — pep/charv
- Median household income & poverty — SAIPE 2023
- Unemployment — BLS LAUS May 2026 (preliminary)
- Geometry & boundaries — Census TIGERweb
- Cities & city population — Census TIGERweb Incorporated Places + ACS 5-year 2019–2023
Data current through .


