Interpretation of Demographics Data
Demographic Data Report for Massachusetts by County
Population: Age under 18
All Races (includes Hispanic), Both Sexes
2020-2024 American Community Survey 5-Year Data
Sorted by Percent
Massachusetts
- 2023 Rural-Urban Continuum Codes Φ : N/A
- Value (Percent) : The value is 19.4 percent.
- People (Age Under 18) : The number of people (age under 18) is 1,364,181.
- Rank within US : This county is ranked 46 of 52
United States
- 2023 Rural-Urban Continuum Codes Φ : N/A
- Value (Percent) : The value is 22.0 percent.
- People (Age Under 18) : The number of people (age under 18) is 73,517,834.
- Rank within US : N/A
Barnstable County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 14.1 percent.
- People (Age Under 18) : The number of people (age under 18) is 32,704.
- Rank within US : This county is ranked 3085 of 3143
Hampshire County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 14.2 percent.
- People (Age Under 18) : The number of people (age under 18) is 23,042.
- Rank within US : This county is ranked 3080 of 3143
Berkshire County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 16.0 percent.
- People (Age Under 18) : The number of people (age under 18) is 20,662.
- Rank within US : This county is ranked 2976 of 3143
Suffolk County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 16.0 percent.
- People (Age Under 18) : The number of people (age under 18) is 125,812.
- Rank within US : This county is ranked 2976 of 3143
Franklin County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 16.6 percent.
- People (Age Under 18) : The number of people (age under 18) is 11,803.
- Rank within US : This county is ranked 2930 of 3143
Dukes County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 16.8 percent.
- People (Age Under 18) : The number of people (age under 18) is 3,513.
- Rank within US : This county is ranked 2911 of 3143
Middlesex County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 19.5 percent.
- People (Age Under 18) : The number of people (age under 18) is 318,865.
- Rank within US : This county is ranked 2404 of 3143
Bristol County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 20.5 percent.
- People (Age Under 18) : The number of people (age under 18) is 119,489.
- Rank within US : This county is ranked 2095 of 3143
Nantucket County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 20.5 percent.
- People (Age Under 18) : The number of people (age under 18) is 2,975.
- Rank within US : This county is ranked 2095 of 3143
Norfolk County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 20.5 percent.
- People (Age Under 18) : The number of people (age under 18) is 149,313.
- Rank within US : This county is ranked 2095 of 3143
Worcester County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 20.6 percent.
- People (Age Under 18) : The number of people (age under 18) is 178,921.
- Rank within US : This county is ranked 2055 of 3143
Plymouth County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 20.7 percent.
- People (Age Under 18) : The number of people (age under 18) is 110,836.
- Rank within US : This county is ranked 2021 of 3143
Essex County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 20.8 percent.
- People (Age Under 18) : The number of people (age under 18) is 169,485.
- Rank within US : This county is ranked 1978 of 3143
Hampden County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 20.9 percent.
- People (Age Under 18) : The number of people (age under 18) is 96,761.
- Rank within US : This county is ranked 1936 of 3143
Notes:
Created by statecancerprofiles.cancer.gov on 03/22/2026 3:49 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 under 18, see the dictionary.
Data for United States does not include Puerto Rico.