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
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County Population % of State Population
Baker 16731 0.39
Benton 95214 2.24
Clackamas 422468 9.95
Clatsop 41162 0.97
Columbia 52724 1.24
Coos 64979 1.53
Crook 24929 0.59
Curry 23519 0.55
Deschutes 199464 4.70
Douglas 111295 2.62
Gilliam 2016 0.05
Grant 7240 0.17
Harney 7507 0.18
Hood River 23962 0.56
Jackson 223620 5.27
Jefferson 24581 0.58
Josephine 88238 2.08
Klamath 69553 1.64
Lake 8172 0.19
Lane 383308 9.03
Lincoln 50510 1.19
Linn 128981 3.04
Malheur 31642 0.75
Marion 346350 8.16
Morrow 12221 0.29
Multnomah 816514 19.24
Polk 87956 2.07
Sherman 1871 0.04
Tillamook 27461 0.65
Umatilla 80108 1.89
Union 26173 0.62
Wallowa 7406 0.17
Wasco 26640 0.63
Washington 601130 14.16
Wheeler 1454 0.03
Yamhill 107945 2.54