Counties in Colorado by net domestic migration, July to June
Douglas County had the highest net domestic migration, July to June of 64 counties in 2020, at 6,930. Arapahoe County had the lowest, at -2,392. The median was 10 and the figure for Colorado was 25,498. Source: the U.S. Census Bureau.
Map of counties, 2020
- Under -130
- -130 to -30
- -30 to 0
- 0 to 60
- 60 to 420
- 420 and over
Top 40 counties, 2020
Full ranking
| Rank | Counties | 2020 | Change on 2019 |
|---|---|---|---|
| 1 | Douglas County Estimated | 6,930 | +18% |
| 2 | Weld County Estimated | 6,828 | +0.4% |
| 3 | Denver County Estimated | 5,641 | +26.5% |
| 4 | El Paso County Estimated | 2,429 | -50.9% |
| 5 | Larimer County Estimated | 2,257 | -56.2% |
| 6 | Pueblo County Estimated | 1,616 | +71% |
| 7 | Broomfield County Estimated | 1,355 | +58.7% |
| 8 | Mesa County Estimated | 1,141 | -4.9% |
| 9 | Montrose County Estimated | 625 | +13.2% |
| 10 | Elbert County Estimated | 560 | +50.9% |
| 11 | Boulder County Estimated | 485 | +246.5% |
| 12 | Chaffee County Estimated | 394 | +27.5% |
| 13 | Archuleta County Estimated | 259 | +10.2% |
| 14 | Delta County Estimated | 205 | -38.3% |
| 15 | Teller County Estimated | 168 | -38.7% |
| 16 | Saguache County Estimated | 114 | +595.7% |
| 17 | Montezuma County Estimated | 110 | +3.8% |
| 18 | Fremont County Estimated | 91 | -22.9% |
| 19 | Huerfano County Estimated | 84 | +95.3% |
| 20 | La Plata County Estimated | 81 | +145% |
| 21 | Custer County Estimated | 71 | -54.8% |
| 22 | Gunnison County Estimated | 58 | -75.3% |
| 23 | Las Animas County Estimated | 57 | +311.1% |
| 24 | Dolores County Estimated | 48 | +700% |
| 25 | Park County Estimated | 38 | -86.2% |
| 26 | Costilla County Estimated | 37 | -35.1% |
| 27 | Kiowa County Estimated | 34 | +36% |
| 28 | Rio Grande County Estimated | 32 | +500% |
| 29 | San Juan County Estimated | 30 | +181.1% |
| 30 | Mineral County Estimated | 22 | +257.1% |
| 31 | Hinsdale County Estimated | 20 | +185.7% |
| 32 | Gilpin County Estimated | 10 | -90.2% |
| 32 | Washington County Estimated | 10 | +900% |
| 34 | Clear Creek County Estimated | -1 | -102.4% |
| 35 | Ouray County Estimated | -2 | -101.1% |
| 36 | Grand County Estimated | -3 | -102.2% |
| 37 | Sedgwick County Estimated | -7 | -450% |
| 38 | Jackson County Estimated | -9 | +25% |
| 39 | Phillips County Estimated | -17 | +51.4% |
| 40 | Otero County Estimated | -18 | +69% |
| 41 | Prowers County Estimated | -22 | -191.7% |
| 42 | Rio Blanco County Estimated | -24 | -26.3% |
| 43 | Lincoln County Estimated | -27 | -130.3% |
| 44 | Garfield County Estimated | -28 | +64.1% |
| 45 | Cheyenne County Estimated | -30 | +21.1% |
| 46 | Conejos County Estimated | -44 | -633.3% |
| 47 | Yuma County Estimated | -48 | -65.5% |
| 48 | Baca County Estimated | -56 | -380% |
| 49 | Kit Carson County Estimated | -64 | -30.6% |
| 50 | Alamosa County Estimated | -82 | -3.8% |
| 51 | Routt County Estimated | -92 | -206.7% |
| 52 | San Miguel County Estimated | -99 | -22.2% |
| 53 | Moffat County Estimated | -117 | -1,562.5% |
| 54 | Pitkin County Estimated | -131 | +59.9% |
| 55 | Adams County Estimated | -138 | -111.7% |
| 56 | Lake County Estimated | -147 | -178.2% |
| 57 | Bent County Estimated | -208 | +1.4% |
| 58 | Morgan County Estimated | -237 | -224.7% |
| 59 | Crowley County Estimated | -276 | -326.2% |
| 60 | Logan County Estimated | -427 | -452.9% |
| 61 | Jefferson County Estimated | -447 | -131.7% |
| 61 | Summit County Estimated | -447 | -170.9% |
| 63 | Eagle County Estimated | -702 | -73.8% |
| 64 | Arapahoe County Estimated | -2,392 | -196% |
Other periods
About this ranking
Estimated moves into an area from elsewhere in the same country minus moves out to the rest of the country, from July 1 of the previous year through June 30 of the reported year.
More on how it is measured
- United States: states and counties.
- Canada: provinces and territories, net interprovincial migration (Statistics Canada).
- United Kingdom: local authorities, counting moves between any two UK local authorities, including across the borders of England, Wales, Scotland and Northern Ireland (ONS internal migration).
- A negative value means more people left than arrived.
Sums to zero, or close to it, for each country 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, 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, 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, July to June, 2020) [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, 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, July to June, 2020. 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-july-june/colorado-counties?period=2020. Accessed 12 Oct. 2026.
Chicago (author-date)
U.S. Census Bureau. 2026. Population Estimates Program: net domestic migration, 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, July to June, 2020. 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-july-june/colorado-counties?period=2020.
Harvard
U.S. Census Bureau (2026) Population Estimates Program: net domestic migration, 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, July to June, 2020 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/net-domestic-migration-july-june/colorado-counties?period=2020 (Accessed: 12 October 2026).
BibTeX
@misc{census_counties_in_colorado_by_2020,
author = {{U.S. Census Bureau}},
title = {{Population Estimates Program: net domestic migration, 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, July to June, 2020}},
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-july-june/colorado-counties?period=2020. Publisher attribution: U.S. Census Bureau. Population Estimates Program: net domestic migration, 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, 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, July to June, 2020
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-july-june/colorado-counties?period=2020
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/net-domestic-migration-july-june/colorado-counties?period=2020.
N1 - Publisher attribution: U.S. Census Bureau. Population Estimates Program: net domestic migration, 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, July to June using official data, and cite the source.
rank_places {"indicator":"net_domestic_migration_july_june","level":"province","within":"Colorado","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=net_domestic_migration_july_june&level=province&within=Colorado&limit=10Questions
Which county has the highest net domestic migration, July to June?
Douglas County, with 6,930 in 2020, according to the U.S. Census Bureau.
Which county has the lowest net domestic migration, July to June?
Arapahoe County, with -2,392 in 2020.
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, 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.