Counties in Colorado by net domestic migration, July to June
Weld County had the highest net domestic migration, July to June of 64 counties in 2019, at 6,798. Arapahoe County had the lowest, at -808. The median was 25 and the figure for Colorado was 33,815. Source: the U.S. Census Bureau.
Map of counties, 2019
- Under -80
- -80 to -30
- -30 to 0
- 0 to 110
- 110 to 320
- 320 and over
Top 40 counties, 2019
Full ranking
| Rank | Counties | 2019 | Change on 2018 |
|---|---|---|---|
| 1 | Weld County Estimated | 6,798 | +14.8% |
| 2 | Douglas County Estimated | 5,871 | +23.4% |
| 3 | Larimer County Estimated | 5,156 | +2.1% |
| 4 | El Paso County Estimated | 4,944 | -26.6% |
| 5 | Denver County Estimated | 4,459 | -4.2% |
| 6 | Jefferson County Estimated | 1,409 | -31.8% |
| 7 | Mesa County Estimated | 1,200 | -29.8% |
| 8 | Adams County Estimated | 1,176 | -55.8% |
| 9 | Pueblo County Estimated | 945 | -18.1% |
| 10 | Broomfield County Estimated | 854 | +16.2% |
| 11 | Montrose County Estimated | 552 | +13.8% |
| 12 | Elbert County Estimated | 371 | -21.7% |
| 13 | Delta County Estimated | 332 | -32.7% |
| 14 | Chaffee County Estimated | 309 | -19.3% |
| 15 | Park County Estimated | 276 | -55.2% |
| 16 | Teller County Estimated | 274 | -38.7% |
| 17 | Archuleta County Estimated | 235 | -29.2% |
| 17 | Gunnison County Estimated | 235 | +4.9% |
| 19 | Lake County Estimated | 188 | +1,353.3% |
| 20 | Ouray County Estimated | 180 | +542.9% |
| 21 | Custer County Estimated | 157 | +36.5% |
| 22 | Grand County Estimated | 138 | +4.5% |
| 23 | Crowley County Estimated | 122 | +139.2% |
| 24 | Logan County Estimated | 121 | +277.9% |
| 25 | Fremont County Estimated | 118 | -81.2% |
| 26 | Montezuma County Estimated | 106 | -2.8% |
| 27 | Gilpin County Estimated | 102 | +14.6% |
| 28 | Lincoln County Estimated | 89 | +43.5% |
| 29 | Costilla County Estimated | 57 | +23.9% |
| 30 | Huerfano County Estimated | 43 | -85.5% |
| 31 | Clear Creek County Estimated | 41 | +175.9% |
| 32 | Kiowa County Estimated | 25 | +8.7% |
| 33 | Prowers County Estimated | 24 | +242.9% |
| 34 | Baca County Estimated | 20 | -63% |
| 35 | Moffat County Estimated | 8 | +172.7% |
| 36 | Hinsdale County Estimated | 7 | +75% |
| 37 | Sedgwick County Estimated | 2 | +113.3% |
| 38 | Washington County Estimated | 1 | +102.3% |
| 39 | Conejos County Estimated | -6 | -128.6% |
| 40 | Dolores County Estimated | -8 | -144.4% |
| 40 | Rio Grande County Estimated | -8 | +63.6% |
| 42 | Jackson County Estimated | -12 | -144.4% |
| 43 | Mineral County Estimated | -14 | -170% |
| 44 | Rio Blanco County Estimated | -19 | +67.8% |
| 45 | Saguache County Estimated | -23 | -112.7% |
| 46 | Las Animas County Estimated | -27 | -110.3% |
| 47 | Yuma County Estimated | -29 | +73.9% |
| 48 | Routt County Estimated | -30 | -120.5% |
| 49 | Phillips County Estimated | -35 | +23.9% |
| 50 | San Juan County Estimated | -37 | -184.1% |
| 51 | Cheyenne County Estimated | -38 | -337.5% |
| 52 | Kit Carson County Estimated | -49 | -1,325% |
| 53 | Otero County Estimated | -58 | -627.3% |
| 54 | Morgan County Estimated | -73 | -171.6% |
| 55 | Garfield County Estimated | -78 | -161.4% |
| 56 | Alamosa County Estimated | -79 | -229.5% |
| 57 | San Miguel County Estimated | -81 | -224.6% |
| 58 | Summit County Estimated | -165 | +59.4% |
| 59 | La Plata County Estimated | -180 | -127.2% |
| 60 | Bent County Estimated | -211 | -1,272.2% |
| 61 | Pitkin County Estimated | -327 | -170.2% |
| 62 | Boulder County Estimated | -331 | -150.9% |
| 63 | Eagle County Estimated | -404 | +31.1% |
| 64 | Arapahoe County Estimated | -808 | -169.4% |
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, 2019) [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, 2019. 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=2019. 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, 2019. 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=2019.
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, 2019 [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=2019 (Accessed: 12 October 2026).
BibTeX
@misc{census_counties_in_colorado_by_2019,
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, 2019}},
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=2019. 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, 2019
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=2019
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/net-domestic-migration-july-june/colorado-counties?period=2019.
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
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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}
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Which county has the highest net domestic migration, July to June?
Weld County, with 6,798 in 2019, according to the U.S. Census Bureau.
Which county has the lowest net domestic migration, July to June?
Arapahoe County, with -808 in 2019.
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.