Interpretation of Demographics Data
Demographic Data Report for Connecticut by County
Population: Age 40 and over
All Races (includes Hispanic), Both Sexes
2020-2024 American Community Survey 5-Year Data
Sorted by Percent
United States
- 2023 Rural-Urban Continuum Codes Φ : N/A
- Value (Percent) : The value is 48.5 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 162,458,898.
- Rank within US : N/A
Connecticut
- 2023 Rural-Urban Continuum Codes Φ : N/A
- Value (Percent) : The value is 51.5 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 1,865,822.
- Rank within US : This county is ranked 8 of 52
Tolland County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 48.4 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 72,621.
- Rank within US : This county is ranked 2359 of 3143
Hartford County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 50.1 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 451,800.
- Rank within US : This county is ranked 2012 of 3143
New Haven County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 50.8 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 441,096.
- Rank within US : This county is ranked 1836 of 3143
Fairfield County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 51.5 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 498,290.
- Rank within US : This county is ranked 1669 of 3143
Windham County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 52.0 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 60,693.
- Rank within US : This county is ranked 1544 of 3143
New London County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 52.7 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 141,681.
- Rank within US : This county is ranked 1344 of 3143
Middlesex County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 56.3 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 93,437.
- Rank within US : This county is ranked 638 of 3143
Litchfield County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 57.0 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 106,204.
- Rank within US : This county is ranked 566 of 3143
Notes:
Created by statecancerprofiles.cancer.gov on 03/22/2026 4:16 pm.
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 40 and over, 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.