Counties in Colorado by net international migration, July to June
Arapahoe County had the highest net international migration, July to June of 64 counties in 2018, at 2,456. Delta County had the lowest, at -9. The median was 10 and the figure for Colorado was 11,306. Source: the U.S. Census Bureau.
Map of counties, 2018
- Under 0
- 0 to 10
- 10 to 40
- 40 and over
Top 40 counties, 2018
Full ranking
| Rank | Counties | 2018 | Change on 2017 |
|---|---|---|---|
| 1 | Arapahoe County Estimated | 2,456 | +22.5% |
| 2 | Denver County Estimated | 2,220 | +34.4% |
| 3 | Adams County Estimated | 1,260 | +45.2% |
| 4 | Boulder County Estimated | 1,038 | +22.8% |
| 5 | Jefferson County Estimated | 795 | +31.2% |
| 6 | Douglas County Estimated | 675 | +21% |
| 7 | Larimer County Estimated | 577 | +26.5% |
| 8 | Weld County Estimated | 443 | +49.7% |
| 9 | El Paso County Estimated | 407 | -25.7% |
| 10 | Eagle County Estimated | 211 | +35.3% |
| 11 | Morgan County Estimated | 181 | +30.2% |
| 12 | Summit County Estimated | 125 | +17.9% |
| 13 | Pitkin County Estimated | 113 | +16.5% |
| 14 | Broomfield County Estimated | 110 | +19.6% |
| 15 | Garfield County Estimated | 98 | +145% |
| 16 | Phillips County Estimated | 62 | +29.2% |
| 17 | Yuma County Estimated | 61 | +48.8% |
| 18 | Mesa County Estimated | 59 | +126.9% |
| 19 | Pueblo County Estimated | 52 | +108% |
| 20 | Routt County Estimated | 49 | +19.5% |
| 21 | San Miguel County Estimated | 43 | +43.3% |
| 22 | Las Animas County Estimated | 30 | +3.4% |
| 23 | Crowley County Estimated | 21 | +90.9% |
| 24 | La Plata County Estimated | 19 | +111.1% |
| 25 | Clear Creek County Estimated | 18 | +28.6% |
| 26 | Grand County Estimated | 17 | +41.7% |
| 27 | Elbert County Estimated | 15 | +36.4% |
| 28 | Rio Blanco County Estimated | 14 | +40% |
| 29 | Costilla County Estimated | 13 | +44.4% |
| 30 | Alamosa County Estimated | 12 | +300% |
| 31 | Archuleta County Estimated | 11 | +37.5% |
| 32 | Chaffee County Estimated | 10 | 0% |
| 32 | Prowers County Estimated | 10 | +150% |
| 34 | Gunnison County Estimated | 9 | +12.5% |
| 34 | Kit Carson County Estimated | 9 | +80% |
| 34 | Lake County Estimated | 9 | +125% |
| 37 | Moffat County Estimated | 8 | +100% |
| 37 | Otero County Estimated | 8 | +166.7% |
| 37 | Rio Grande County Estimated | 8 | +300% |
| 40 | Saguache County Estimated | 7 | 0% |
| 41 | Montrose County Estimated | 6 | +200% |
| 41 | Park County Estimated | 6 | +50% |
| 43 | Lincoln County Estimated | 5 | +25% |
| 44 | Cheyenne County Estimated | 4 | 0% |
| 44 | Conejos County Estimated | 4 | 0% |
| 44 | Fremont County Estimated | 4 | +33.3% |
| 44 | Huerfano County Estimated | 4 | +100% |
| 48 | Baca County Estimated | 3 | 0% |
| 49 | Bent County Estimated | 1 | 0% |
| 49 | Jackson County Estimated | 1 | 0% |
| 49 | Kiowa County Estimated | 1 | 0% |
| 52 | Custer County Estimated | 0 | |
| 52 | Dolores County Estimated | 0 | |
| 52 | Gilpin County Estimated | 0 | |
| 52 | Hinsdale County Estimated | 0 | |
| 52 | Logan County Estimated | 0 | +100% |
| 52 | Mineral County Estimated | 0 | |
| 52 | Ouray County Estimated | 0 | |
| 52 | San Juan County Estimated | 0 | |
| 52 | Sedgwick County Estimated | 0 | |
| 61 | Teller County Estimated | -1 | +50% |
| 61 | Washington County Estimated | -1 | 0% |
| 63 | Montezuma County Estimated | -5 | 0% |
| 64 | Delta County Estimated | -9 | 0% |
Other periods
About this ranking
Estimated moves into the area from abroad minus moves out of the area to other countries, from July 1 of the previous year through June 30 of the reported year.
More on how it is measured
- United States: Census Bureau estimates, including people born in the United States and abroad, moves between the states and Puerto Rico, and net movement of the Armed Forces overseas.
- Canada: Statistics Canada immigrants, minus net emigration, plus the net change in non-permanent residents.
- Australia: ABS net overseas migration for the financial year.
- United Kingdom local authorities: Office for National Statistics mid-year estimates, counting people who move for at least 12 months.
A component of each country's official population estimates. Methods differ between the statistical offices, so compare places within a country first. Differs from the World Bank net_migration series, which uses calendar years and a different method.
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 international migration, 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 international migration, 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 international migration, July to June, 2018) [Data set]. Retrieved October 12, 2026, from https://www.census.gov/programs-surveys/popest/data/data-sets.html
MLA 9
Population Estimates Program: net international migration, 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 international migration, July to June, 2018. U.S. Census Bureau, 26 Mar. 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/net-international-migration-july-june/colorado-counties?period=2018. Accessed 12 Oct. 2026.
Chicago (author-date)
U.S. Census Bureau. 2026. Population Estimates Program: net international migration, 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 international migration, July to June, 2018. 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-international-migration-july-june/colorado-counties?period=2018.
Harvard
U.S. Census Bureau (2026) Population Estimates Program: net international migration, 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 international migration, July to June, 2018 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/net-international-migration-july-june/colorado-counties?period=2018 (Accessed: 12 October 2026).
BibTeX
@misc{census_counties_in_colorado_by_2018,
author = {{U.S. Census Bureau}},
title = {{Population Estimates Program: net international migration, 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 international migration, July to June, 2018}},
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-international-migration-july-june/colorado-counties?period=2018. Publisher attribution: U.S. Census Bureau. Population Estimates Program: net international migration, 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 international migration, 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 international migration, July to June, 2018
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-international-migration-july-june/colorado-counties?period=2018
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/net-international-migration-july-june/colorado-counties?period=2018.
N1 - Publisher attribution: U.S. Census Bureau. Population Estimates Program: net international migration, 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 international migration, July to June using official data, and cite the source.
rank_places {"indicator":"net_international_migration_july_june","level":"province","within":"Colorado","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=net_international_migration_july_june&level=province&within=Colorado&limit=10Questions
Which county has the highest net international migration, July to June?
Arapahoe County, with 2,456 in 2018, according to the U.S. Census Bureau.
Which county has the lowest net international migration, July to June?
Delta County, with -9 in 2018.
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 international migration, 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.