Demographics Table
Demographic Data Report for Connecticut by County
Population: Age 18-39
All Races (includes Hispanic), Both Sexes
2019-2023 American Community Survey 5-Year Data
Sorted by Value
County
|
2023 Rural-Urban Continuum Codes Φ
|
Value (Percent)
|
People (Age 18-39)
|
Rank within US (of 3143 counties)
|
|---|---|---|---|---|
| Connecticut | N/A | 28.1 | 1,010,315 | 45 of 52 |
| United States | N/A | 29.5 | 98,058,393 | N/A |
| Litchfield County | Rural | 24.8 | 45,976 | 1,916 |
| Fairfield County | Urban | 26.6 | 255,360 | 1,248 |
| Middlesex County | Urban | 26.9 | 44,339 | 1,143 |
| New London County | Urban | 27.9 | 74,816 | 880 |
| New Haven County | Urban | 28.8 | 248,598 | 704 |
| Hartford County | Urban | 28.9 | 258,495 | 682 |
| Windham County | Urban | 29.5 | 34,215 | 562 |
| Tolland County | Urban | 33.0 | 48,516 | 238 |
Notes:
Created by statecancerprofiles.cancer.gov on 02/17/2026 9:04 am.
Φ Rural-Urban Continuum Codes provided by the USDA.
Source: Demographic data provided by the Census Bureau and the American Community Survey.
For more information about Population: Age 18-39, see the dictionary.
Note: This website still uses Connecticut counties instead of planning regions for consistency of geographies across data topics. If/when all data sources have new planning regions, then this website will switch to using them. 2013 Rural-Urban Continuum Codes will be used for Connecticut counties.
Data for United States does not include Puerto Rico.
Created by statecancerprofiles.cancer.gov on 02/17/2026 9:04 am.
Φ Rural-Urban Continuum Codes provided by the USDA.
Source: Demographic data provided by the Census Bureau and the American Community Survey.
For more information about Population: Age 18-39, see the dictionary.
Note: This website still uses Connecticut counties instead of planning regions for consistency of geographies across data topics. If/when all data sources have new planning regions, then this website will switch to using them. 2013 Rural-Urban Continuum Codes will be used for Connecticut counties.
Data for United States does not include Puerto Rico.