Data / Population aged 18 to 64 / Daniels County

Population aged 18 to 64 in Daniels County

Population aged 18 to 64 in Daniels County was 50% in 2025, according to the U.S. Census Bureau. That is down 0.5 pts from 2024. That is the 46th highest of 56 counties in 2025.

202550%
Change on 2024-0.5 pts
Rank46th of 56Counties in Montana ranked
Series high55.22015
Series low502025

Next release: Friday, 25 June 2027, estimated by Invokely from past publication dates (low confidence), not announced by the publisher. Release calendar

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Population aged 18 to 64 in Daniels County, 2010 to 2025

505254562010201320162019202220252010: 54 %2011: 54.7 %2012: 54.8 %2013: 54.9 %2014: 54.2 %2015: 55.2 %2016: 53.7 %2017: 53.2 %2018: 53.1 %2019: 53.1 %2020: 52.3 %2021: 52.3 %2022: 51.2 %2023: 51 %2024: 50.5 %2025: 50 %505254562010201620252010: 54 %2011: 54.7 %2012: 54.8 %2013: 54.9 %2014: 54.2 %2015: 55.2 %2016: 53.7 %2017: 53.2 %2018: 53.1 %2019: 53.1 %2020: 52.3 %2021: 52.3 %2022: 51.2 %2023: 51 %2024: 50.5 %2025: 50 %
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12, published 2026-06-25.
All 16 values
Period%
202550
202450.5
202351
202251.2
202152.3
202052.3
201953.1
201853.1
201753.2
201653.7
201555.2
201454.2
201354.9
201254.8
201154.7
201054

Compared with Montana and United States

Place2025
Daniels County50
Montana57.6
United States60

Daniels County compared with nearby places

Beaverhead County: 57.7 %Big Horn County: 54.5 %Blaine County: 54.3 %Broadwater County: 55.4 %Carbon County: 51.4 %Carter County: 49.7 %Cascade County: 57.6 %Chouteau County: 53.4 %Custer County: 56.4 %Daniels County: 50 %Dawson County: 55.6 %Deer Lodge County: 55.5 %Fallon County: 52.3 %Fergus County: 50.6 %Flathead County: 55.7 %Gallatin County: 67.4 %Garfield County: 49.1 %Glacier County: 56 %Golden Valley County: 47.9 %Granite County: 54.3 %Hill County: 54.3 %Jefferson County: 53.4 %Judith Basin County: 49.1 %Lake County: 52 %Lewis and Clark County: 57.6 %Liberty County: 51 %Lincoln County: 49.9 %McCone County: 51 %Madison County: 53.7 %Meagher County: 50.5 %Mineral County: 53.3 %Missoula County: 62.8 %Musselshell County: 52.1 %Park County: 58 %Petroleum County: 48.5 %Phillips County: 51.2 %Pondera County: 52.2 %Powder River County: 49.1 %Powell County: 59.4 %Prairie County: 41.2 %Ravalli County: 51.5 %Richland County: 57 %Roosevelt County: 53.2 %Rosebud County: 53.4 %Sanders County: 48.7 %Sheridan County: 53.5 %Silver Bow County: 58.4 %Stillwater County: 51.1 %Sweet Grass County: 51.8 %Teton County: 50.6 %Toole County: 60.5 %Treasure County: 46.4 %Valley County: 52.3 %Wheatland County: 50.4 %Wibaux County: 52.9 %Yellowstone County: 58.1 %
  • Under 50
  • 50 to 51
  • 51 to 53
  • 53 to 54
  • 54 to 57
  • 57 and over
Population aged 18 to 64, 2025, %. Daniels County is outlined. Same source and period for every area shown. Source: U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Rankings

Definition

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.

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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 (Population aged 18 to 64, Daniels County, 2010 to 2025) [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, Population aged 18 to 64, Daniels County, 2010 to 2025. U.S. Census Bureau, 25 June 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/en/population-18-64/daniels-county-montana. 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. Population aged 18 to 64, Daniels County, 2010 to 2025. Dataset. Accessed October 12, 2026. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Also distributed by Invokely, https://invokely.ai/en/population-18-64/daniels-county-montana.

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, Population aged 18 to 64, Daniels County, 2010 to 2025 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/en/population-18-64/daniels-county-montana (Accessed: 12 October 2026).

BibTeX
@misc{census_population_aged_18_to_2025,
  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: Population aged 18 to 64, Daniels County, 2010 to 2025}},
  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/en/population-18-64/daniels-county-montana. 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: Population aged 18 to 64, Daniels County, 2010 to 2025
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/en/population-18-64/daniels-county-montana
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/population-18-64/daniels-county-montana.
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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Questions

What is the population aged 18 to 64 in Daniels County?

Population aged 18 to 64 in Daniels County was 50% in 2025, according to the U.S. Census Bureau. That is down 0.5 pts from 2024. That is the 46th highest of 56 counties in 2025.

Where does this figure come from?

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 by Invokely on 2026-10-12.

What was the highest population aged 18 to 64 in Daniels County?

55.2% in 2015, the highest value since 2010 in this series.

Related statistics for Daniels County

All statistics for Daniels County | Daniels County in figures