Counties in Colorado by natural change, July to June, 2025
Denver County had the highest natural change, July to June of 64 counties in 2025, at 4,197. Pueblo County had the lowest, at -349. The median was -2 and the figure for Colorado was 20,608. Source: the U.S. Census Bureau.
Top 40 counties, 2025
Full ranking
| Rank | Counties | 2025 | Change on 2024 |
|---|---|---|---|
| 1 | Denver County Estimated | 4,197 | +10.2% |
| 2 | El Paso County Estimated | 3,405 | +12.2% |
| 3 | Adams County Estimated | 3,356 | +8.6% |
| 4 | Arapahoe County Estimated | 3,332 | +11.7% |
| 5 | Weld County Estimated | 2,915 | +9.8% |
| 6 | Douglas County Estimated | 2,065 | +10.4% |
| 7 | Jefferson County Estimated | 795 | +66% |
| 8 | Larimer County Estimated | 471 | +79.8% |
| 9 | Garfield County Estimated | 337 | +4.7% |
| 10 | Eagle County Estimated | 284 | +2.9% |
| 11 | Boulder County Estimated | 244 | +34.1% |
| 12 | Summit County Estimated | 188 | +4.4% |
| 13 | Morgan County Estimated | 183 | +15.1% |
| 14 | Broomfield County Estimated | 174 | +11.5% |
| 15 | Routt County Estimated | 85 | +26.9% |
| 16 | Grand County Estimated | 58 | +20.8% |
| 16 | Moffat County Estimated | 58 | +16% |
| 18 | Elbert County Estimated | 57 | +32.6% |
| 19 | Lake County Estimated | 55 | +1.9% |
| 20 | Gunnison County Estimated | 52 | +8.3% |
| 21 | Pitkin County Estimated | 49 | 0% |
| 22 | Yuma County Estimated | 34 | +9.7% |
| 23 | San Miguel County Estimated | 27 | +17.4% |
| 24 | Park County Estimated | 19 | +18.8% |
| 25 | Gilpin County Estimated | 18 | +5.9% |
| 26 | Prowers County Estimated | 12 | +9.1% |
| 27 | Custer County Estimated | 7 | +16.7% |
| 28 | Kiowa County Estimated | 2 | +200% |
| 29 | La Plata County Estimated | 1 | -80% |
| 30 | Hinsdale County Estimated | 0 | +100% |
| 30 | Lincoln County Estimated | 0 | +100% |
| 32 | Alamosa County Estimated | -2 | +33.3% |
| 32 | Cheyenne County Estimated | -2 | 0% |
| 32 | Conejos County Estimated | -2 | 0% |
| 32 | Jackson County Estimated | -2 | +50% |
| 32 | Phillips County Estimated | -2 | +50% |
| 32 | Rio Blanco County Estimated | -2 | +33.3% |
| 32 | San Juan County Estimated | -2 | +33.3% |
| 39 | Mineral County Estimated | -6 | 0% |
| 40 | Saguache County Estimated | -7 | -40% |
| 40 | Washington County Estimated | -7 | +46.2% |
| 42 | Ouray County Estimated | -9 | +25% |
| 43 | Kit Carson County Estimated | -10 | +16.7% |
| 44 | Dolores County Estimated | -11 | +15.4% |
| 45 | Clear Creek County Estimated | -12 | +14.3% |
| 46 | Baca County Estimated | -18 | +18.2% |
| 47 | Chaffee County Estimated | -22 | +21.4% |
| 47 | Sedgwick County Estimated | -22 | +4.3% |
| 49 | Crowley County Estimated | -23 | +4.2% |
| 50 | Rio Grande County Estimated | -26 | 0% |
| 51 | Archuleta County Estimated | -33 | 0% |
| 51 | Costilla County Estimated | -33 | 0% |
| 53 | Bent County Estimated | -35 | 0% |
| 54 | Teller County Estimated | -45 | +11.8% |
| 55 | Logan County Estimated | -85 | +2.3% |
| 56 | Huerfano County Estimated | -86 | -1.2% |
| 57 | Otero County Estimated | -93 | 0% |
| 58 | Las Animas County Estimated | -96 | +3% |
| 59 | Montezuma County Estimated | -106 | -1% |
| 60 | Delta County Estimated | -121 | +9% |
| 61 | Montrose County Estimated | -152 | +17.8% |
| 62 | Mesa County Estimated | -161 | +43.5% |
| 63 | Fremont County Estimated | -290 | +3.7% |
| 64 | Pueblo County Estimated | -349 | +5.7% |
Other periods
About this ranking
Estimated births minus deaths of residents from July 1 of the previous year through June 30 of the reported year. A negative value means more deaths than births.
Equals births_july_june minus deaths_july_june for the same place and year. Not a calendar-year figure.
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: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. 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: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021 (Counties in Colorado by natural change, July to June, 2025) [Data set]. Retrieved October 12, 2026, from https://www.census.gov/programs-surveys/popest/data/data-sets.html
MLA 9
Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021, Counties in Colorado by natural change, July to June, 2025. U.S. Census Bureau, 26 Mar. 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/natural-change-july-june/colorado-counties. Accessed 12 Oct. 2026.
Chicago (author-date)
U.S. Census Bureau. 2026. Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. Counties in Colorado by natural change, July to June, 2025. Dataset. Accessed October 12, 2026. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Also distributed by Invokely, https://invokely.ai/rankings/natural-change-july-june/colorado-counties.
Harvard
U.S. Census Bureau (2026) Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021, Counties in Colorado by natural change, July to June, 2025 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/natural-change-july-june/colorado-counties (Accessed: 12 October 2026).
BibTeX
@misc{census_counties_in_colorado_by_2025,
author = {{U.S. Census Bureau}},
title = {{Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021: Counties in Colorado by natural change, July to June, 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/rankings/natural-change-july-june/colorado-counties. Publisher attribution: U.S. Census Bureau. Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. 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: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021: Counties in Colorado by natural change, July to June, 2025
PY - 2026
DA - 2026/03/26
PB - U.S. Census Bureau
DB - Invokely
UR - https://www.census.gov/programs-surveys/popest/data/data-sets.html
L2 - https://invokely.ai/rankings/natural-change-july-june/colorado-counties
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/natural-change-july-june/colorado-counties.
N1 - Publisher attribution: U.S. Census Bureau. Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. 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:
Rank Counties in Colorado by natural change, July to June using official data, and cite the source.
rank_places {"indicator":"natural_change_july_june","level":"province","within":"Colorado","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=natural_change_july_june&level=province&within=Colorado&limit=10Questions
Which county has the highest natural change, July to June?
Denver County, with 4,197 in 2025, according to the U.S. Census Bureau.
Which county has the lowest natural change, July to June?
Pueblo County, with -349 in 2025.
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: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. Retrieved 2026-10-12.