Data / Rankings / Population aged 18 to 64 / US states

US states by population aged 18 to 64

District of Columbia had the highest population aged 18 to 64 of 51 states in 2018, at 71.1%. Idaho had the lowest, at 58.3%. The median was 60.9% and the figure for the United States was 61.6%. Source: the U.S. Census Bureau.

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Highest71.1District of Columbia
Lowest58.3Idaho
Median60.951 states
United States61.6History

Map of states, 2018

Alabama: 60.9 %Alaska: 63.3 %Arizona: 59.1 %Arkansas: 59.7 %California: 63.1 %Colorado: 63.3 %Connecticut: 62.2 %Delaware: 60.2 %District of Columbia: 71.1 %Florida: 59.8 %Georgia: 62.3 %Hawaii: 60.7 %Idaho: 58.3 %Illinois: 62.2 %Indiana: 60.6 %Iowa: 59.4 %Kansas: 59.8 %Kentucky: 60.9 %Louisiana: 61 %Maine: 60.5 %Maryland: 62.6 %Massachusetts: 63.5 %Michigan: 61.2 %Minnesota: 60.9 %Mississippi: 60.3 %Missouri: 60.7 %Montana: 59.3 %Nebraska: 59.4 %Nevada: 61.6 %New Hampshire: 62.7 %New Jersey: 62.3 %New Mexico: 59.4 %New York: 63.3 %North Carolina: 61.4 %North Dakota: 61.5 %Ohio: 60.7 %Oklahoma: 60 %Oregon: 61.3 %Pennsylvania: 61.1 %Rhode Island: 63.2 %South Carolina: 60.1 %South Dakota: 58.6 %Tennessee: 61.3 %Texas: 61.7 %Utah: 59.2 %Vermont: 61.8 %Virginia: 62.5 %Washington: 62.4 %West Virginia: 60.1 %Wisconsin: 60.9 %Wyoming: 59.7 %
  • Under 60
  • 60 to 61
  • 61 to 62
  • 62 to 63
  • 63 and over
%, 2018. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All states, 2018

District of Columbia: 71.1 %District of Columbia71.1Massachusetts: 63.5 %Massachusetts63.5Colorado: 63.3 %Colorado63.3Alaska: 63.3 %Alaska63.3New York: 63.3 %New York63.3Rhode Island: 63.2 %Rhode Island63.2California: 63.1 %California63.1New Hampshire: 62.7 %New Hampshire62.7Maryland: 62.6 %Maryland62.6Virginia: 62.5 %Virginia62.5Washington: 62.4 %Washington62.4New Jersey: 62.3 %New Jersey62.3Georgia: 62.3 %Georgia62.3Illinois: 62.2 %Illinois62.2Connecticut: 62.2 %Connecticut62.2Vermont: 61.8 %Vermont61.8Texas: 61.7 %Texas61.7Nevada: 61.6 %Nevada61.6North Dakota: 61.5 %North Dakota61.5North Carolina: 61.4 %North Carolina61.4Oregon: 61.3 %Oregon61.3Tennessee: 61.3 %Tennessee61.3Michigan: 61.2 %Michigan61.2Pennsylvania: 61.1 %Pennsylvania61.1Louisiana: 61 %Louisiana61Kentucky: 60.9 %Kentucky60.9Wisconsin: 60.9 %Wisconsin60.9Minnesota: 60.9 %Minnesota60.9Alabama: 60.9 %Alabama60.9Hawaii: 60.7 %Hawaii60.7Ohio: 60.7 %Ohio60.7Missouri: 60.7 %Missouri60.7Indiana: 60.6 %Indiana60.6Maine: 60.5 %Maine60.5Mississippi: 60.3 %Mississippi60.3Delaware: 60.2 %Delaware60.2South Carolina: 60.1 %South Carolina60.1West Virginia: 60.1 %West Virginia60.1Oklahoma: 60 %Oklahoma60Florida: 59.8 %Florida59.8Kansas: 59.8 %Kansas59.8Wyoming: 59.7 %Wyoming59.7Arkansas: 59.7 %Arkansas59.7Nebraska: 59.4 %Nebraska59.4New Mexico: 59.4 %New Mexico59.4Iowa: 59.4 %Iowa59.4Montana: 59.3 %Montana59.3Utah: 59.2 %Utah59.2Arizona: 59.1 %Arizona59.1South Dakota: 58.6 %South Dakota58.6Idaho: 58.3 %Idaho58.3District of Columbia: 71.1 %District of Columbia71.1Massachusetts: 63.5 %Massachusetts63.5Colorado: 63.3 %Colorado63.3Alaska: 63.3 %Alaska63.3New York: 63.3 %New York63.3Rhode Island: 63.2 %Rhode Island63.2California: 63.1 %California63.1New Hampshire: 62.7 %New Hampshire62.7Maryland: 62.6 %Maryland62.6Virginia: 62.5 %Virginia62.5Washington: 62.4 %Washington62.4New Jersey: 62.3 %New Jersey62.3Georgia: 62.3 %Georgia62.3Illinois: 62.2 %Illinois62.2Connecticut: 62.2 %Connecticut62.2Vermont: 61.8 %Vermont61.8Texas: 61.7 %Texas61.7Nevada: 61.6 %Nevada61.6North Dakota: 61.5 %North Dakota61.5North Carolina: 61.4 %North Carolina61.4Oregon: 61.3 %Oregon61.3Tennessee: 61.3 %Tennessee61.3Michigan: 61.2 %Michigan61.2Pennsylvania: 61.1 %Pennsylvania61.1Louisiana: 61 %Louisiana61Kentucky: 60.9 %Kentucky60.9Wisconsin: 60.9 %Wisconsin60.9Minnesota: 60.9 %Minnesota60.9Alabama: 60.9 %Alabama60.9Hawaii: 60.7 %Hawaii60.7Ohio: 60.7 %Ohio60.7Missouri: 60.7 %Missouri60.7Indiana: 60.6 %Indiana60.6Maine: 60.5 %Maine60.5Mississippi: 60.3 %Mississippi60.3Delaware: 60.2 %Delaware60.2South Carolina: 60.1 %South Carolina60.1West Virginia: 60.1 %West Virginia60.1Oklahoma: 60 %Oklahoma60Florida: 59.8 %Florida59.8Kansas: 59.8 %Kansas59.8Wyoming: 59.7 %Wyoming59.7Arkansas: 59.7 %Arkansas59.7Nebraska: 59.4 %Nebraska59.4New Mexico: 59.4 %New Mexico59.4Iowa: 59.4 %Iowa59.4Montana: 59.3 %Montana59.3Utah: 59.2 %Utah59.2Arizona: 59.1 %Arizona59.1South Dakota: 58.6 %South Dakota58.6Idaho: 58.3 %Idaho58.3
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankStates2018 (%)Change on 2017
1District of Columbia71.1-0.1 pts
2Massachusetts63.5-0.2 pts
3Colorado63.3-0.1 pts
4Alaska63.3-0.5 pts
5New York63.3-0.2 pts
6Rhode Island63.2-0.3 pts
7California63.1-0.1 pts
8New Hampshire62.7-0.3 pts
9Maryland62.6-0.3 pts
10Virginia62.5-0.3 pts
11Washington62.4-0.2 pts
12New Jersey62.3-0.2 pts
13Georgia62.3-0.1 pts
14Illinois62.2-0.2 pts
15Connecticut62.2-0.2 pts
16Vermont61.8-0.4 pts
17Texas61.7-0.1 pts
18Nevada61.6-0.1 pts
19North Dakota61.5-0.5 pts
20North Carolina61.4-0.2 pts
21Oregon61.3-0.3 pts
22Tennessee61.3-0.2 pts
23Michigan61.2-0.3 pts
24Pennsylvania61.1-0.3 pts
25Louisiana61-0.3 pts
26Kentucky60.9-0.3 pts
27Wisconsin60.9-0.3 pts
28Minnesota60.9-0.3 pts
29Alabama60.9-0.2 pts
30Hawaii60.7-0.4 pts
31Ohio60.7-0.3 pts
32Missouri60.7-0.2 pts
33Indiana60.6-0.2 pts
34Maine60.5-0.4 pts
35Mississippi60.3-0.3 pts
36Delaware60.2-0.4 pts
37South Carolina60.1-0.3 pts
38West Virginia60.1-0.4 pts
39Oklahoma60-0.2 pts
40Florida59.8-0.2 pts
41Kansas59.8-0.2 pts
42Wyoming59.7-0.5 pts
43Arkansas59.7-0.2 pts
44Nebraska59.4-0.3 pts
45New Mexico59.4-0.3 pts
46Iowa59.4-0.3 pts
47Montana59.3-0.4 pts
48Utah59.2+0.1 pts
49Arizona59.1-0.1 pts
50South Dakota58.6-0.4 pts
51Idaho58.3-0.1 pts

Other periods

About this ranking

Residents aged 18 to 64 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.

Not comparable with working-age shares for ages 15 to 64 used in EU and World Bank statistics.

Every value in the ranking comes from the same publisher and the same period, so the states 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 18 to 64 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 18 to 64 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 (US states by population aged 18 to 64, 2018) [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 18 to 64 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, US states by population aged 18 to 64, 2018. U.S. Census Bureau, 25 June 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/population-18-64/us-states?period=2018. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Population Estimates Program, county population by age and sex: residents aged 18 to 64 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. US states by population aged 18 to 64, 2018. 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-18-64/us-states?period=2018.

Harvard

U.S. Census Bureau (2026) Population Estimates Program, county population by age and sex: residents aged 18 to 64 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, US states by population aged 18 to 64, 2018 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/population-18-64/us-states?period=2018 (Accessed: 12 October 2026).

BibTeX
@misc{census_us_states_by_population_2018,
  author = {{U.S. Census Bureau}},
  title = {{Population Estimates Program, county population by age and sex: residents aged 18 to 64 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: US states by population aged 18 to 64, 2018}},
  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-18-64/us-states?period=2018. Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 18 to 64 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 18 to 64 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: US states by population aged 18 to 64, 2018
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-18-64/us-states?period=2018
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-18-64/us-states?period=2018.
N1  - Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 18 to 64 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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Rank US states by population aged 18 to 64 using official data, and cite the source.
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Questions

Which state has the highest population aged 18 to 64?

District of Columbia, with 71.1% in 2018, according to the U.S. Census Bureau.

Which state has the lowest population aged 18 to 64?

Idaho, with 58.3% in 2018.

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 18 to 64 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 aged 18 to 64: other rankings

US states: more rankings