QuickFacts provides statistics for all states and counties, and for cities and towns with a population of 5,000 or more.
Population estimates, July 1, 2018, (V2018)
New Haven County, Connecticut
Fairfield County, Connecticut
Hartford County, Connecticut
Litchfield County, Connecticut
Middlesex County, Connecticut
New London County, Connecticut
Tolland County, Connecticut
Windham County, Connecticut
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., V2018) refers to the final year of the series (2010 thru 2018). Different vintage years of estimates are not comparable.
(b)Hispanics may be of any race, so also are included in applicable race categories
(c)Economic Census - Puerto Rico data are not comparable to U.S. Economic Census data
-Either no or too few sample observations were available to compute an estimate, or a ratio of medians cannot be calculated because one or both of the median estimates falls in the lowest or upper interval of an open ended distribution.
DSuppressed to avoid disclosure of confidential information
ZValue greater than zero but less than half unit of measure shown
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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