Population aged 18 to 64 in Northwest Hills Planning Region
Population aged 18 to 64 in Northwest Hills Planning Region was 56% in 2025, according to the U.S. Census Bureau. That is down 0.5 pts from 2024. That is the 9th highest of 9 counties in 2025.
Population aged 18 to 64 in Northwest Hills Planning Region, 2020 to 2025
All 6 values
| Period | % |
|---|---|
| 2025 | 56 |
| 2024 | 56.5 |
| 2023 | 57.1 |
| 2022 | 57.8 |
| 2021 | 58.5 |
| 2020 | 58.9 |
Compared with Connecticut and United States
| Place | 2025 |
|---|---|
| Northwest Hills Planning Region | 56 |
| Connecticut | 60.1 |
| United States | 60 |
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.
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
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, Northwest Hills Planning Region, 2020 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, Northwest Hills Planning Region, 2020 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/northwest-hills-planning-region-connecticut. 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, Northwest Hills Planning Region, 2020 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/northwest-hills-planning-region-connecticut.
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, Northwest Hills Planning Region, 2020 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/northwest-hills-planning-region-connecticut (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, Northwest Hills Planning Region, 2020 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/northwest-hills-planning-region-connecticut. 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, Northwest Hills Planning Region, 2020 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/northwest-hills-planning-region-connecticut
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/en/population-18-64/northwest-hills-planning-region-connecticut.
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 -
Use this data in your AI agent
Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:
What is the latest population aged 18 to 64 in Northwest Hills Planning Region? Cite the source.
get_value {"indicator":"population_18_64_share","place":"us-county-09160"}
GET https://invokely.ai/api/v1/value?indicator=population_18_64_share&place=us-county-09160Questions
What is the population aged 18 to 64 in Northwest Hills Planning Region?
Population aged 18 to 64 in Northwest Hills Planning Region was 56% in 2025, according to the U.S. Census Bureau. That is down 0.5 pts from 2024. That is the 9th highest of 9 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 Northwest Hills Planning Region?
58.9% in 2020, the highest value since 2020 in this series.
Related statistics for Northwest Hills Planning Region
- Black or African American population share
- Median age
- White (non-Hispanic) population share
- Residents who moved from another state in the past year
- Adult obesity rate, local model estimate
- COPD in adults, local model estimate
- Uninsured rate, under 65 (US model-based estimate)
- Labor force participation rate (US five-year survey estimate)
All statistics for Northwest Hills Planning Region | Northwest Hills Planning Region in figures