This is less than a one percent rise in Fairfield County’s population, from 955,895 in 2020 to 959,768 in 2021.
Fairfield County had the largest population in Connecticut 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.
Connecticut Counties By Population Change from 2020 to 2021
| County | 2020 Estimated Population | 2021 Estimated Population | % Change in Population From Year to Year |
|---|---|---|---|
| Middlesex County | 163,923 | 164,759 | 0.5% |
| Tolland County | 149,650 | 150,293 | 0.4% |
| Fairfield County | 955,895 | 959,768 | 0.4% |
| New London County | 268,248 | 268,805 | 0.2% |
| Windham County | 116,240 | 116,418 | 0.2% |
| Litchfield County | 184,874 | 185,000 | 0.1% |
| New Haven County | 863,498 | 863,700 | 0% |
| Hartford County | 897,932 | 896,854 | -0.1% |
ORGANIZATIONS IN THIS STORY
Cos Cob• Wilton Center• Georgetown• Glenville• Southport• Pemberwick• Danbury• Darien• Westport Cdp• Sherman• Shelton• Redding• Town of Greenwich• Cannondale• City of Bridgeport• Newtown• Norwalk• Bethel• Ridgefield• Town of Wilton• City of Stamford• Trumbull• Byram• Riverside• Stratford• Old Greenwich• Weston
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