Business planning by county

Massachusetts county reference

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

• Barnstable County

  Massachusetts · FIPS 25001

  233,539 residents · 2025 estimate

• Berkshire County

  Massachusetts · FIPS 25003

  128,224 residents · 2025 estimate

• Bristol County

  Massachusetts · FIPS 25005

  593,640 residents · 2025 estimate

• Dukes County

  Massachusetts · FIPS 25007

  21,219 residents · 2025 estimate

• Essex County

  Massachusetts · FIPS 25009

  826,653 residents · 2025 estimate

• Franklin County

  Massachusetts · FIPS 25011

  70,698 residents · 2025 estimate

• Hampden County

  Massachusetts · FIPS 25013

  464,338 residents · 2025 estimate

• Hampshire County

  Massachusetts · FIPS 25015

  164,065 residents · 2025 estimate

• Middlesex County

  Massachusetts · FIPS 25017

  1,669,979 residents · 2025 estimate

• Nantucket County

  Massachusetts · FIPS 25019

  14,758 residents · 2025 estimate

• Norfolk County

  Massachusetts · FIPS 25021

  739,749 residents · 2025 estimate

• Plymouth County

  Massachusetts · FIPS 25023

  546,829 residents · 2025 estimate

• Suffolk County

  Massachusetts · FIPS 25025

  791,891 residents · 2025 estimate

• Worcester County

  Massachusetts · FIPS 25027

  888,502 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.