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Which counties in Oregon are people leaving?

13 of the 36 counties in Oregon had more residents move away to other U.S. counties than move in during 2025. Malheur County had the largest net outflow for its size: 7.1 per 1,000 residents (−230 people). In people, Washington County had the largest net outflow (−2,070).

Net out-migration does not always mean fewer residents: 6 of these 13 counties still had more residents in 2025 than in 2020.

Data as of 2025 · updated

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All 13 Oregon counties with net out-migration

Counties with the most out-migration in Oregon
RankCountyPer 1,000 residents, 2025Net movers 2025ResidentsPopulation change 2020–25
1Malheur County−7.1−23032,261+1.9%
2Harney County−4.5−337,380−1.7%
3Clatsop County−4.2−17340,926−0.6%
4Washington County−3.4−2,070611,708+1.8%
5Benton County−2.5−24497,728+4.4%
6Multnomah County−2.4−1,931795,391−2.6%
7Yamhill County−2.4−263110,024+2.2%
8Wasco County−1.7−4426,310−1.1%
9Polk County−1.5−13390,037+2.3%
10Grant County−0.6−47,075−2.3%
11Hood River County−0.5−1123,720−0.7%
12Baker County−0.4−616,658−0.4%
13Umatilla County−0.0−281,119+1.5%

How this is ranked

Counties where more residents moved away to other U.S. counties than moved in (negative net domestic migration in the Census Bureau's population estimates for 2025), per 1,000 residents, largest net outflow first. Moves from and to other countries, births and deaths are not counted. Counties with fewer than 1,000 residents, or without a figure for the same period as the others, are left out, as on every ranking.

Source: U.S. Census Bureau, Population Estimates Program (Vintage 2025). Figures come from public federal statistics and are informational only, not investment advice. Check the source before relying on a number. Methodology: how ranks and figures are built. More on every layer: data sources and licences.

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Questions

Which county in Oregon are the most people leaving?

For its size, Malheur County: net domestic migration of −7.1 per 1,000 residents in 2025 (−230 people; Census Bureau population estimates). Next: Harney County (−4.5) and Clatsop County (−4.2).

How many counties in Oregon have more people moving out than in?

13 of the 36 counties in Oregon had more residents move away to other U.S. counties than move in during 2025.

Does net out-migration mean a county is losing population?

Not always. Net domestic migration counts moves between U.S. counties only; births, deaths and international migration also change the total. 6 of these 13 counties still had more residents in 2025 than in 2020.

More county rankings for Oregon

Counties with the most out-migration in other states

Across the U.S.