Counties in Oregon by population under 18

Morrow County had the highest population under 18 of 36 counties in 2014, at 28.2%. Curry County had the lowest, at 15.3%. The median was 20.5% and the figure for Oregon was 21.8%. Source: the U.S. Census Bureau.

Highest28.2Morrow County
Lowest15.3Curry County
Median20.536 counties
Oregon21.8History

All counties, 2014

Morrow County: 28.2 %Morrow County28.2Umatilla County: 25.7 %Umatilla County25.7Marion County: 25.5 %Marion County25.5Hood River County: 25.2 %Hood River County25.2Malheur County: 24.8 %Malheur County24.8Washington County: 24.6 %Washington County24.6Jefferson County: 23.9 %Jefferson County23.9Polk County: 23.7 %Polk County23.7Yamhill County: 23.5 %Yamhill County23.5Linn County: 23.1 %Linn County23.1Clackamas County: 22.5 %Clackamas County22.5Columbia County: 22.4 %Columbia County22.4Wasco County: 22.4 %Wasco County22.4Union County: 22.2 %Union County22.2Deschutes County: 21.8 %Deschutes County21.8Harney County: 21.4 %Harney County21.4Klamath County: 21.3 %Klamath County21.3Jackson County: 21 %Jackson County21Clatsop County: 19.9 %Clatsop County19.9Multnomah County: 19.9 %Multnomah County19.9Gilliam County: 19.9 %Gilliam County19.9Baker County: 19.7 %Baker County19.7Douglas County: 19.5 %Douglas County19.5Crook County: 19.5 %Crook County19.5Josephine County: 19.2 %Josephine County19.2Lane County: 19.2 %Lane County19.2Tillamook County: 18.9 %Tillamook County18.9Grant County: 18.7 %Grant County18.7Lake County: 18.7 %Lake County18.7Coos County: 18.5 %Coos County18.5Sherman County: 18.1 %Sherman County18.1Wallowa County: 18 %Wallowa County18Benton County: 17.1 %Benton County17.1Lincoln County: 16.9 %Lincoln County16.9Wheeler County: 16.3 %Wheeler County16.3Curry County: 15.3 %Curry County15.3
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2014 (%)Change on 2013
1Morrow County28.2+0.1 pts
2Umatilla County25.7-0.2 pts
3Marion County25.5-0.2 pts
4Hood River County25.2-0.1 pts
5Malheur County24.8-0 pts
6Washington County24.6-0.2 pts
7Jefferson County23.9-0 pts
8Polk County23.7-0.1 pts
9Yamhill County23.5-0.3 pts
10Linn County23.1-0.3 pts
11Clackamas County22.5-0.3 pts
12Columbia County22.4-0.3 pts
13Wasco County22.4+0.2 pts
14Union County22.2-0 pts
15Deschutes County21.8-0.3 pts
16Harney County21.4-0.2 pts
17Klamath County21.3-0.1 pts
18Jackson County21-0.2 pts
19Clatsop County19.9+0.1 pts
20Multnomah County19.9-0.1 pts
21Gilliam County19.9+0.1 pts
22Baker County19.7+0.1 pts
23Douglas County19.5-0.1 pts
24Crook County19.5-0.1 pts
25Josephine County19.2-0.2 pts
26Lane County19.2-0.1 pts
27Tillamook County18.9-0.2 pts
28Grant County18.7-0.2 pts
29Lake County18.7+0.5 pts
30Coos County18.5-0 pts
31Sherman County18.1-0.4 pts
32Wallowa County18-0.1 pts
33Benton County17.1-0.2 pts
34Lincoln County16.9-0.1 pts
35Wheeler County16.3-1.5 pts
36Curry County15.3-0.3 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 Oregon 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 Oregon 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/oregon-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 Oregon 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/oregon-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 Oregon 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/oregon-counties?period=2014 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_oregon_by_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 Oregon 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/oregon-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 Oregon 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/oregon-counties?period=2014
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/oregon-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?

Morrow County, with 28.2% in 2014, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Curry County, with 15.3% 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 Oregon: more rankings