Oregon Population By County in 2020

Updated on August 1, 2024.

Based on the US Census Vintage data estimates, in 2020, the population of Oregon was 4,245,044. Among all Oregon counties, Multnomah had the highest population (816,514), followed by Washington (601,130), and Clackamas (422,468). Wheeler was the least populated county (1,454).

Hover over or click on the counties in the map below to see the populations. The data can also be found in a table below. You can use the table to sort, filter, and explore the data further.

You can see similar information for other states and by state for the United States.

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Oregon Population By County in 2020
Oregon Population By County in 2020
County
Population
% of State Population
Multnomah 816,514 19.24
Washington 601,130 14.16
Clackamas 422,468 9.95
Lane 383,308 9.03
Marion 346,350 8.16
Jackson 223,620 5.27
Deschutes 199,464 4.70
Linn 128,981 3.04
Douglas 111,295 2.62
Yamhill 107,945 2.54
Benton 95,214 2.24
Josephine 88,238 2.08
Polk 87,956 2.07
Umatilla 80,108 1.89
Klamath 69,553 1.64
Coos 64,979 1.53
Columbia 52,724 1.24
Lincoln 50,510 1.19
Clatsop 41,162 0.97
Malheur 31,642 0.75
Tillamook 27,461 0.65
Wasco 26,640 0.63
Union 26,173 0.62
Crook 24,929 0.59
Jefferson 24,581 0.58
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