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QuickFacts

Middlesex County, Connecticut; Fairfield County, Connecticut

QuickFacts provides statistics for all states and counties, and for cities and towns with a population of 5,000 or more.

Chart

Population Estimates, July 1 2021, (V2021)

0
96,000
192,000
288,000
384,000
480,000
576,000
672,000
768,000
864,000
960,000
Middlesex County, Connecticut
164,759
Fairfield County, Connecticut
959,768
Hartford County, Connecticut
896,854
Litchfield County, Connecticut
185,000
New Haven County, Connecticut
863,700
New London County, Connecticut
268,805
Tolland County, Connecticut
150,293
Windham County, Connecticut
116,418
0
96,000
192,000
288,000
384,000
480,000
576,000
672,000
768,000
864,000
960,000
Value Notes

Estimates are not comparable to other geographic levels due to methodology differences that may exist between different data sources.

Some estimates presented here come from sample data, and thus have sampling errors that may render some apparent differences between geographies statistically indistinguishable. Click the Quick Info icon to the left of each row in TABLE view to learn about sampling error.

The vintage year (e.g., V2021) refers to the final year of the series (2020 thru 2021). Different vintage years of estimates are not comparable.

Users should exercise caution when comparing 2016-2020 ACS 5-year estimates to other ACS estimates. For more information, please visit the 2020 5-year ACS Comparison Guidance page.

Fact Notes Value Flags

QuickFacts data are derived from: Population Estimates, American Community Survey, Census of Population and Housing, Current Population Survey, Small Area Health Insurance Estimates, Small Area Income and Poverty Estimates, State and County Housing Unit Estimates, County Business Patterns, Nonemployer Statistics, Economic Census, Survey of Business Owners, Building Permits.

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