Interpretation of Demographics Data
Demographic Data Report for Connecticut by County
Population: Age 18-39
All Races (includes Hispanic), Both Sexes
2020-2024 American Community Survey 5-Year Data
Sorted by Percent
Connecticut
- 2023 Rural-Urban Continuum Codes Φ : N/A
- Value (Percent) : The value is 28.3 percent.
- People (Age 18-39) : The number of people (age 18-39) is 1,027,100.
- Rank within US : This county is ranked 41 of 52
United States
- 2023 Rural-Urban Continuum Codes Φ : N/A
- Value (Percent) : The value is 29.5 percent.
- People (Age 18-39) : The number of people (age 18-39) is 98,945,767.
- Rank within US : N/A
Fairfield County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 26.8 percent.
- People (Age 18-39) : The number of people (age 18-39) is 259,036.
- Rank within US : This county is ranked 1196 of 3143
Hartford County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 29.3 percent.
- People (Age 18-39) : The number of people (age 18-39) is 263,928.
- Rank within US : This county is ranked 594 of 3143
Litchfield County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 25.1 percent.
- People (Age 18-39) : The number of people (age 18-39) is 46,749.
- Rank within US : This county is ranked 1836 of 3143
Middlesex County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 27.1 percent.
- People (Age 18-39) : The number of people (age 18-39) is 44,897.
- Rank within US : This county is ranked 1112 of 3143
New Haven County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 29.1 percent.
- People (Age 18-39) : The number of people (age 18-39) is 252,598.
- Rank within US : This county is ranked 638 of 3143
New London County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 28.0 percent.
- People (Age 18-39) : The number of people (age 18-39) is 75,313.
- Rank within US : This county is ranked 858 of 3143
Tolland County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 33.7 percent.
- People (Age 18-39) : The number of people (age 18-39) is 50,524.
- Rank within US : This county is ranked 205 of 3143
Windham County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 29.2 percent.
- People (Age 18-39) : The number of people (age 18-39) is 34,055.
- Rank within US : This county is ranked 615 of 3143
Notes:
Created by statecancerprofiles.cancer.gov on 03/24/2026 1:48 am.
Φ Rural–urban county classifications are based on the 2023 USDA Rural–Urban Continuum Codes (except for Connecticut Counties which use 2013 codes). State-level cancer rates for rural areas are calculated using cancer cases registered exclusively in rural counties, while state-level cancer rates for urban areas are calculated using cases registered exclusively in urban counties.
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.
Data for United States does not include Puerto Rico.