Oregon Population By County in 2015

Updated on January 27, 2024.

Based on the US Census Vintage data estimates, in 2015, the population of Oregon was 4,018,542. Among all Oregon counties, Multnomah[object Promise] had the highest population (790,723), followed by Washington[object Promise] (572,955), and Clackamas[object Promise] (399,852). Wheeler[object Promise] was the least populated county (1,327).

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 2015
Oregon Population By County in 2015
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County Population % of State Population
Baker 15899 0.40
Benton 88443 2.20
Clackamas 399852 9.95
Clatsop 37848 0.94
Columbia 49671 1.24
Coos 62696 1.56
Crook 21465 0.53
Curry 22329 0.56
Deschutes 174392 4.34
Douglas 107260 2.67
Gilliam 1866 0.05
Grant 7209 0.18
Harney 7154 0.18
Hood River 22925 0.57
Jackson 211587 5.27
Jefferson 22540 0.56
Josephine 84606 2.11
Klamath 65742 1.64
Lake 7789 0.19
Lane 362257 9.02
Lincoln 47046 1.17
Linn 120303 2.99
Malheur 30228 0.75
Marion 329106 8.19
Morrow 11130 0.28
Multnomah 790723 19.68
Polk 79012 1.97
Sherman 1691 0.04
Tillamook 25554 0.64
Umatilla 76491 1.90
Union 25720 0.64
Wallowa 6810 0.17
Wasco 25469 0.63
Washington 572955 14.26
Wheeler 1327 0.03
Yamhill 101447 2.52