Interpretation of Demographics Data
Demographic Data Report for New Jersey by County
Population: Age under 18
All Races (includes Hispanic), Both Sexes
2020-2024 American Community Survey 5-Year Data
Sorted by Percent
New Jersey
- 2023 Rural-Urban Continuum Codes Φ : N/A
- Value (Percent) : The value is 21.8 percent.
- People (Age Under 18) : The number of people (age under 18) is 2,037,645.
- Rank within US : This county is ranked 25 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
Atlantic 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 57,395.
- Rank within US : This county is ranked 1978 of 3143
Bergen 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 201,193.
- Rank within US : This county is ranked 1936 of 3143
Burlington 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 96,126.
- Rank within US : This county is ranked 2095 of 3143
Camden County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 22.7 percent.
- People (Age Under 18) : The number of people (age under 18) is 119,695.
- Rank within US : This county is ranked 1174 of 3143
Cape May County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 17.1 percent.
- People (Age Under 18) : The number of people (age under 18) is 16,274.
- Rank within US : This county is ranked 2875 of 3143
Cumberland County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 24.4 percent.
- People (Age Under 18) : The number of people (age under 18) is 37,403.
- Rank within US : This county is ranked 573 of 3143
Essex County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 23.6 percent.
- People (Age Under 18) : The number of people (age under 18) is 203,641.
- Rank within US : This county is ranked 809 of 3143
Gloucester County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 21.3 percent.
- People (Age Under 18) : The number of people (age under 18) is 65,238.
- Rank within US : This county is ranked 1775 of 3143
Hudson County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 19.8 percent.
- People (Age Under 18) : The number of people (age under 18) is 141,994.
- Rank within US : This county is ranked 2323 of 3143
Hunterdon County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 19.1 percent.
- People (Age Under 18) : The number of people (age under 18) is 24,884.
- Rank within US : This county is ranked 2518 of 3143
Mercer County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 22.0 percent.
- People (Age Under 18) : The number of people (age under 18) is 84,828.
- Rank within US : This county is ranked 1478 of 3143
Middlesex County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 21.5 percent.
- People (Age Under 18) : The number of people (age under 18) is 187,080.
- Rank within US : This county is ranked 1698 of 3143
Monmouth 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 134,746.
- Rank within US : This county is ranked 1936 of 3143
Morris 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 106,211.
- Rank within US : This county is ranked 2055 of 3143
Ocean County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 25.0 percent.
- People (Age Under 18) : The number of people (age under 18) is 163,366.
- Rank within US : This county is ranked 435 of 3143
Passaic County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 23.6 percent.
- People (Age Under 18) : The number of people (age under 18) is 123,141.
- Rank within US : This county is ranked 809 of 3143
Salem County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 21.9 percent.
- People (Age Under 18) : The number of people (age under 18) is 14,314.
- Rank within US : This county is ranked 1525 of 3143
Somerset County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 21.2 percent.
- People (Age Under 18) : The number of people (age under 18) is 74,044.
- Rank within US : This county is ranked 1816 of 3143
Sussex 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 28,419.
- Rank within US : This county is ranked 2404 of 3143
Union County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 23.5 percent.
- People (Age Under 18) : The number of people (age under 18) is 136,260.
- Rank within US : This county is ranked 847 of 3143
Warren County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 19.3 percent.
- People (Age Under 18) : The number of people (age under 18) is 21,393.
- Rank within US : This county is ranked 2459 of 3143
Notes:
Created by statecancerprofiles.cancer.gov on 03/23/2026 6:57 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.