This is less than a one percent rise in Plymouth County’s population, from 530,979 in 2020 to 533,003 in 2021.
Plymouth County had the seventh largest population in Massachusetts in 2021.
The US Census Bureau found more than 73 percent of counties in the US saw a natural decrease in population in 2021. This is up from a 55.5 percent increase in 2020.
The Midwest suffered the most sustained population decreases, with many counties along the US East Coast and through the Rocky Mountains seeing increases.
The US population continues to grow, though at a slower rate than before.
Massachusetts Counties By Population Change from 2020 to 2021
| County | 2020 Estimated Population | 2021 Estimated Population | % Change in Population From Year to Year |
|---|---|---|---|
| Dukes County | 20,581 | 21,097 | 2.5% |
| Nantucket County | 14,244 | 14,491 | 1.7% |
| Barnstable County | 228,969 | 232,411 | 1.5% |
| Plymouth County | 530,979 | 533,003 | 0.4% |
| Bristol County | 579,172 | 580,164 | 0.2% |
| Worcester County | 861,461 | 862,029 | 0.1% |
| Franklin County | 70,988 | 71,015 | 0% |
| Berkshire County | 128,758 | 128,657 | -0.1% |
| Norfolk County | 726,025 | 724,505 | -0.2% |
| Essex County | 809,218 | 807,074 | -0.3% |
| Hampshire County | 162,064 | 161,572 | -0.3% |
| Hampden County | 464,908 | 462,718 | -0.5% |
| Middlesex County | 1,629,422 | 1,614,742 | -0.9% |
| Suffolk County | 795,431 | 771,245 | -3% |
ORGANIZATIONS IN THIS STORY
Bridgewater• Halifax• Hingham• Marshfield• Hull• Marshfield Town• Norwell• North Pembroke• South Duxbury• Marion Center• Southfield• Green Harbor-Cedar Crest• West Wareham• Scituate Town• Kingston• Scituate• West Bridgewater• Town of Hanson• Hanson• North Lakeville• North Plymouth• Plymouth Town• Carver• Middleborough Center• Ocean Bluff-Brant Rock• Whitman• The Pinehills• East Bridgewater• Hull Town• Town of Hanover• Plymouth• City of Brockton• Wareham Center• Duxbury• Marshfield Hills• North Scituate• Abington Town• Bridgewater Town• Mattapoisett Center• Onset• Plympton• Weweantic• Abington• Kingston Town• White Island Shores
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