Business planning by county

New Hampshire county reference

10 counties and county equivalents in New Hampshire. Search names or FIPS codes, compare Census geography and keep the original sources with your work.

• Belknap County

  New Hampshire · FIPS 33001

  65,147 residents · 2025 estimate

• Carroll County

  New Hampshire · FIPS 33003

  52,784 residents · 2025 estimate

• Cheshire County

  New Hampshire · FIPS 33005

  78,269 residents · 2025 estimate

• Coos County

  New Hampshire · FIPS 33007

  31,343 residents · 2025 estimate

• Grafton County

  New Hampshire · FIPS 33009

  93,225 residents · 2025 estimate

• Hillsborough County

  New Hampshire · FIPS 33011

  433,415 residents · 2025 estimate

• Merrimack County

  New Hampshire · FIPS 33013

  158,078 residents · 2025 estimate

• Rockingham County

  New Hampshire · FIPS 33015

  324,077 residents · 2025 estimate

• Strafford County

  New Hampshire · FIPS 33017

  135,043 residents · 2025 estimate

• Sullivan County

  New Hampshire · FIPS 33019

  43,961 residents · 2025 estimate

Use the county data

Use a county reference when organizing a market-research brief, outreach territory or business calculation. County population gives geographic context; it does not measure the number of qualified customers.

These are geographic reference records, not contact lists or verified sales leads.

Geography: 2025 U.S. Census Gazetteer. Population: Vintage 2025 estimates, July 1, 2025. County equivalents include parishes, boroughs, independent cities and planning regions. Puerto Rico population is not supplied by this population file.