Counties in Colorado by net domestic migration rate, July to June
Custer County had the highest net domestic migration rate, July to June of 64 counties in 2021, at 80.06 per 1,000 inhabitants. Lincoln County had the lowest, at -29.45 per 1,000 inhabitants. The median was 6.1 per 1,000 inhabitants and the figure for Colorado was 1.07 per 1,000 inhabitants. Source: the U.S. Census Bureau.
Map of counties, 2021
- Under -10
- -10 to -5
- -5 to 0
- 0 to 12
- 12 to 19
- 19 and over
Top 40 counties, 2021
Full ranking
| Rank | Counties | 2021 | Change on 2020 |
|---|---|---|---|
| 1 | Custer County Estimated | 80.06 | +66.27 pts |
| 2 | Mineral County Estimated | 65.88 | +37.11 pts |
| 3 | San Juan County Estimated | 48.31 | +7.52 pts |
| 4 | Ouray County Estimated | 37.43 | +37.83 pts |
| 5 | Elbert County Estimated | 35.33 | +14.6 pts |
| 6 | Costilla County Estimated | 34.06 | +24.56 pts |
| 7 | Huerfano County Estimated | 31.1 | +18.88 pts |
| 8 | Archuleta County Estimated | 29.89 | +11.47 pts |
| 9 | Dolores County Estimated | 26.35 | +3.15 pts |
| 10 | Douglas County Estimated | 21.62 | +2.17 pts |
| 11 | Park County Estimated | 21.37 | +19.36 pts |
| 12 | Saguache County Estimated | 20.9 | +4.34 pts |
| 13 | Weld County Estimated | 18.64 | -2.09 pts |
| 14 | Conejos County Estimated | 18.21 | +23.61 pts |
| 15 | Gunnison County Estimated | 17.7 | +14.39 pts |
| 16 | Delta County Estimated | 17.35 | +10.75 pts |
| 17 | Montezuma County Estimated | 16.84 | +12.67 pts |
| 18 | Crowley County Estimated | 16.22 | +63.46 pts |
| 19 | Washington County Estimated | 15.5 | +13.45 pts |
| 20 | Chaffee County Estimated | 13.92 | -5.31 pts |
| 21 | Montrose County Estimated | 13.31 | -1.2 pts |
| 22 | Baca County Estimated | 12.91 | +28.52 pts |
| 23 | Fremont County Estimated | 12.85 | +10.95 pts |
| 24 | Mesa County Estimated | 11.76 | +4.41 pts |
| 25 | Teller County Estimated | 11.75 | +5.15 pts |
| 26 | Gilpin County Estimated | 11.27 | +9.67 pts |
| 27 | Pueblo County Estimated | 9.84 | +0.28 pts |
| 28 | Alamosa County Estimated | 9.53 | +14.59 pts |
| 29 | Broomfield County Estimated | 8.85 | -10.12 pts |
| 30 | La Plata County Estimated | 8.17 | +6.74 pts |
| 31 | Clear Creek County Estimated | 7.25 | +7.35 pts |
| 32 | Larimer County Estimated | 6.14 | -0.15 pts |
| 33 | Routt County Estimated | 6.05 | +9.65 pts |
| 34 | Grand County Estimated | 6.01 | +6.2 pts |
| 35 | El Paso County Estimated | 1.24 | -2.11 pts |
| 36 | Kiowa County Estimated | 0 | -23.65 pts |
| 36 | San Miguel County Estimated | 0 | +12.17 pts |
| 38 | Adams County Estimated | -0.96 | -0.7 pts |
| 39 | Garfield County Estimated | -0.97 | -0.5 pts |
| 40 | Otero County Estimated | -1.88 | -0.9 pts |
| 41 | Phillips County Estimated | -2.66 | +1.24 pts |
| 42 | Arapahoe County Estimated | -3.96 | -0.32 pts |
| 43 | Pitkin County Estimated | -4.32 | +3 pts |
| 44 | Lake County Estimated | -4.59 | +13.72 pts |
| 45 | Prowers County Estimated | -4.93 | -3.11 pts |
| 46 | Jefferson County Estimated | -5.04 | -4.27 pts |
| 47 | Logan County Estimated | -5.07 | +14.17 pts |
| 48 | Eagle County Estimated | -5.22 | +7.53 pts |
| 49 | Las Animas County Estimated | -5.97 | -9.92 pts |
| 50 | Summit County Estimated | -6.34 | +8.2 pts |
| 51 | Jackson County Estimated | -6.57 | -0.11 pts |
| 52 | Moffat County Estimated | -7.27 | +1.61 pts |
| 53 | Morgan County Estimated | -8.09 | +0.1 pts |
| 54 | Rio Grande County Estimated | -8.54 | -11.38 pts |
| 55 | Yuma County Estimated | -8.94 | -4.15 pts |
| 56 | Rio Blanco County Estimated | -10.8 | -7.02 pts |
| 57 | Boulder County Estimated | -12.9 | -14.39 pts |
| 58 | Sedgwick County Estimated | -13.57 | -10.48 pts |
| 59 | Hinsdale County Estimated | -14.08 | -39.13 pts |
| 60 | Denver County Estimated | -14.42 | -22.14 pts |
| 61 | Bent County Estimated | -15.54 | +22.5 pts |
| 62 | Cheyenne County Estimated | -15.59 | +0.99 pts |
| 63 | Kit Carson County Estimated | -16.72 | -7.76 pts |
| 64 | Lincoln County Estimated | -29.45 | -24.71 pts |
Other periods
About this ranking
Net domestic migration into a US state or county from July 1 of the previous year through June 30 of the reported year per 1,000 residents, using the average of the population estimates at the two July 1 endpoints.
Sums to zero for the United States as a whole, so there is no national value.
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: net domestic migration rate per 1,000 residents, states and counties, 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: net domestic migration rate per 1,000 residents, states and counties, 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 net domestic migration rate, July to June, 2021) [Data set]. Retrieved October 12, 2026, from https://www.census.gov/programs-surveys/popest/data/data-sets.html
MLA 9
Population Estimates Program: net domestic migration rate per 1,000 residents, states and counties, 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 net domestic migration rate, July to June, 2021. U.S. Census Bureau, 26 Mar. 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/net-domestic-migration-rate-july-june/colorado-counties?period=2021. Accessed 12 Oct. 2026.
Chicago (author-date)
U.S. Census Bureau. 2026. Population Estimates Program: net domestic migration rate per 1,000 residents, states and counties, 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 net domestic migration rate, July to June, 2021. Dataset. Accessed October 12, 2026. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Also distributed by Invokely, https://invokely.ai/rankings/net-domestic-migration-rate-july-june/colorado-counties?period=2021.
Harvard
U.S. Census Bureau (2026) Population Estimates Program: net domestic migration rate per 1,000 residents, states and counties, 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 net domestic migration rate, July to June, 2021 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/net-domestic-migration-rate-july-june/colorado-counties?period=2021 (Accessed: 12 October 2026).
BibTeX
@misc{census_counties_in_colorado_by_2021,
author = {{U.S. Census Bureau}},
title = {{Population Estimates Program: net domestic migration rate per 1,000 residents, states and counties, 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 net domestic migration rate, July to June, 2021}},
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/net-domestic-migration-rate-july-june/colorado-counties?period=2021. Publisher attribution: U.S. Census Bureau. Population Estimates Program: net domestic migration rate per 1,000 residents, states and counties, 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: net domestic migration rate per 1,000 residents, states and counties, 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 net domestic migration rate, July to June, 2021
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/net-domestic-migration-rate-july-june/colorado-counties?period=2021
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/net-domestic-migration-rate-july-june/colorado-counties?period=2021.
N1 - Publisher attribution: U.S. Census Bureau. Population Estimates Program: net domestic migration rate per 1,000 residents, states and counties, 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 net domestic migration rate, July to June using official data, and cite the source.
rank_places {"indicator":"net_domestic_migration_rate_july_june","level":"province","within":"Colorado","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=net_domestic_migration_rate_july_june&level=province&within=Colorado&limit=10Questions
Which county has the highest net domestic migration rate, July to June?
Custer County, with 80.06 per 1,000 inhabitants in 2021, according to the U.S. Census Bureau.
Which county has the lowest net domestic migration rate, July to June?
Lincoln County, with -29.45 per 1,000 inhabitants in 2021.
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: net domestic migration rate per 1,000 residents, states and counties, 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.