Map of New Hampshire Counties

New Hampshire is divided into 10 counties. Use the interactive maps below to explore counties and their boundaries. Download free maps or learn more about creating a custom map of New Hampshire to visualize your own data.

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Interactive Map of New Hampshire Counties

New Hampshire Counties: Key Facts

  • Total number of counties: 10
  • Largest county by land area: Coos County - 1,830 square miles (4,740 km²)
  • Smallest county by area: Strafford County - 369 square miles (956 km²)
  • Most populous county: Hillsborough County - 422,937 (2020 Census)
  • Least populous county: Coos County - 31,268 (2020 Census)
  • Counties with significant urban centers: Hillsborough (Nashua and Manchester), Rockingham (Portsmouth and Exeter), Merrimack (Concord)
  • State capital location: Concord in Merrimack County
  • Bordering states: Maine, Massachusetts, Vermont
  • Time zone: Eastern Time Zone (UTC-5)

Interesting Facts

  • Most counties were formed between 1769 and 1827, with boundaries stable since 1840.
  • Coos County was created in 1803 to govern the remote northern region.
  • New Hampshire's 10 counties are among the fewest of any U.S. state.
  • Coos County, known as the "Switzerland of America," features the White Mountains and Mount Washington.
  • Grafton County's Swanzey Covered Bridge is the only one listed on the National Register of Historic Places open year-round to vehicles.
  • Hart's Location in Carroll County holds the record for the fastest town vote in U.S. history: 27 votes in 7 minutes on November 5, 2002.

Free Downloads

You can download free blank Map of New Hampshire Counties and other maps in high resolution PNG, SVG and PDF formats from the blank maps section of the site: Download Blank Map of New Hampshire Counties

Custom Map Features

This map supports labels.

This map supports surrounding areas. New

This map is divided into 10 counties.

Updates

Feb 2, 2026:

  • Improved map quality
  • Added support for surrounding areas and lakes

Aug 26, 2024:

  • Added map of New Hampshire Counties

Frequently Asked Questions

New Hampshire has exactly 10 counties: Belknap, Carroll, Cheshire, Coos, Grafton, Hillsborough, Merrimack, Rockingham, Strafford, and Sullivan.

Coos County is the largest at 1,830 square miles (4,740 square kilometers).

Hillsborough County is the most populous, with a population of 422,937 as of the 2020 Census.

The county seats are: Belknap (Laconia), Carroll (Ossipee), Cheshire (Keene), Coos (Lancaster), Grafton (North Haverhill), Hillsborough (Nashua), Merrimack (Concord), Rockingham (Brentwood), Strafford (Dover), and Sullivan (Newport).

Strafford County is the smallest, covering 369 square miles (956 square kilometers).

You can use Ultimaps to create custom maps of New Hampshire. Color-code counties manually or upload data, place pins, customize look and feel, and export to PNG, PDF, or SVG.