Data / Rankings / Population under 18 / Counties in New Jersey

Counties in New Jersey by population under 18

Essex County had the highest population under 18 of 21 counties in 2014, at 24%. Cape May County had the lowest, at 17.8%. The median was 22.1% and the figure for New Jersey was 22.5%. Source: the U.S. Census Bureau.

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Highest24Essex County
Lowest17.8Cape May County
Median22.121 counties
New Jersey22.5History

Map of counties, 2014

Atlantic County: 21.9 %Bergen County: 21.7 %Burlington County: 21.8 %Camden County: 23.1 %Cape May County: 17.8 %Cumberland County: 23.4 %Essex County: 24 %Gloucester County: 23 %Hudson County: 20.4 %Hunterdon County: 21.2 %Mercer County: 21.8 %Middlesex County: 22 %Monmouth County: 22.1 %Morris County: 22.3 %Ocean County: 23.5 %Passaic County: 23.9 %Salem County: 22.5 %Somerset County: 23.3 %Sussex County: 21.4 %Union County: 23.8 %Warren County: 21.6 %
  • Under 22
  • 22 to 23
  • 23 and over
%, 2014. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2014

Essex County: 24 %Essex County24Passaic County: 23.9 %Passaic County23.9Union County: 23.8 %Union County23.8Ocean County: 23.5 %Ocean County23.5Cumberland County: 23.4 %Cumberland County23.4Somerset County: 23.3 %Somerset County23.3Camden County: 23.1 %Camden County23.1Gloucester County: 23 %Gloucester County23Salem County: 22.5 %Salem County22.5Morris County: 22.3 %Morris County22.3Monmouth County: 22.1 %Monmouth County22.1Middlesex County: 22 %Middlesex County22Atlantic County: 21.9 %Atlantic County21.9Burlington County: 21.8 %Burlington County21.8Mercer County: 21.8 %Mercer County21.8Bergen County: 21.7 %Bergen County21.7Warren County: 21.6 %Warren County21.6Sussex County: 21.4 %Sussex County21.4Hunterdon County: 21.2 %Hunterdon County21.2Hudson County: 20.4 %Hudson County20.4Cape May County: 17.8 %Cape May County17.8Essex County: 24 %Essex County24Passaic County: 23.9 %Passaic County23.9Union County: 23.8 %Union County23.8Ocean County: 23.5 %Ocean County23.5Cumberland County: 23.4 %Cumberland County23.4Somerset County: 23.3 %Somerset County23.3Camden County: 23.1 %Camden County23.1Gloucester County: 23 %Gloucester County23Salem County: 22.5 %Salem County22.5Morris County: 22.3 %Morris County22.3Monmouth County: 22.1 %Monmouth County22.1Middlesex County: 22 %Middlesex County22Atlantic County: 21.9 %Atlantic County21.9Burlington County: 21.8 %Burlington County21.8Mercer County: 21.8 %Mercer County21.8Bergen County: 21.7 %Bergen County21.7Warren County: 21.6 %Warren County21.6Sussex County: 21.4 %Sussex County21.4Hunterdon County: 21.2 %Hunterdon County21.2Hudson County: 20.4 %Hudson County20.4Cape May County: 17.8 %Cape May County17.8
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2014 (%)Change on 2013
1Essex County24-0.2 pts
2Passaic County23.9-0.1 pts
3Union County23.8-0.1 pts
4Ocean County23.50 pts
5Cumberland County23.4-0.1 pts
6Somerset County23.3-0.4 pts
7Camden County23.1-0.2 pts
8Gloucester County23-0.2 pts
9Salem County22.5-0.3 pts
10Morris County22.3-0.3 pts
11Monmouth County22.1-0.4 pts
12Middlesex County22-0.2 pts
13Atlantic County21.9-0.3 pts
14Burlington County21.8-0.3 pts
15Mercer County21.8-0.1 pts
16Bergen County21.7-0.2 pts
17Warren County21.6-0.4 pts
18Sussex County21.4-0.5 pts
19Hunterdon County21.2-0.4 pts
20Hudson County20.40 pts
21Cape May County17.8-0.1 pts

Other periods

About this ranking

Residents aged 0 to 17 as a percentage of total population on 1 July. United States: Census Bureau county population estimates by age; states and the nation are sums of their counties.

Uses the US age of majority. Not comparable with population_0_14_share, which stops at 14.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 0 to 17 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). Population Estimates Program, county population by age and sex: residents aged 0 to 17 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties (Counties in New Jersey by population under 18, 2014) [Data set]. Retrieved October 12, 2026, from https://www.census.gov/programs-surveys/popest/data/data-sets.html

MLA 9

Population Estimates Program, county population by age and sex: residents aged 0 to 17 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties, Counties in New Jersey by population under 18, 2014. U.S. Census Bureau, 25 June 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/population-under-18/new-jersey-counties?period=2014. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Population Estimates Program, county population by age and sex: residents aged 0 to 17 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. Counties in New Jersey by population under 18, 2014. Dataset. Accessed October 12, 2026. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Also distributed by Invokely, https://invokely.ai/rankings/population-under-18/new-jersey-counties?period=2014.

Harvard

U.S. Census Bureau (2026) Population Estimates Program, county population by age and sex: residents aged 0 to 17 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties, Counties in New Jersey by population under 18, 2014 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/population-under-18/new-jersey-counties?period=2014 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_new_jersey_2014,
  author = {{U.S. Census Bureau}},
  title = {{Population Estimates Program, county population by age and sex: residents aged 0 to 17 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties: Counties in New Jersey by population under 18, 2014}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www.census.gov/programs-surveys/popest/data/data-sets.html},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/population-under-18/new-jersey-counties?period=2014. Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 0 to 17 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - Population Estimates Program, county population by age and sex: residents aged 0 to 17 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties: Counties in New Jersey by population under 18, 2014
PY  - 2026
DA  - 2026/06/25
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www.census.gov/programs-surveys/popest/data/data-sets.html
L2  - https://invokely.ai/rankings/population-under-18/new-jersey-counties?period=2014
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/new-jersey-counties?period=2014.
N1  - Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 0 to 17 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest population under 18?

Essex County, with 24% in 2014, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Cape May County, with 17.8% in 2014.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Population Estimates Program, county population by age and sex: residents aged 0 to 17 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. Retrieved 2026-10-12.

Population under 18: other rankings

Counties in New Jersey: more rankings