Ranking of Oregon Counties By Population in 2015

Updated on January 28, 2024.

Based on the US Census Vintage data estimates, in 2015, the Population for Oregon was 4.02M. Among all Oregon counties, Multnomah County had the highest population (790.72K), followed by Washington County (572.96K), and Clackamas County (399.85K).

The chart below shows the top 10 counties, and the table below shows the ranking of all Oregon counties.

You can see similar ranking information for related topics, and for other states. You can also see the ranking of all counties in the United States.

See this for other years:
Ranking of Oregon Counties By Population in 2015
Multnomah
Washington
Clackamas
Lane
Marion
Jackson
Deschutes
Linn
Douglas
Yamhill
Ranking of Oregon Counties By Population in 2015
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Rank County Population
1 Multnomah County 790723
2 Washington County 572955
3 Clackamas County 399852
4 Lane County 362257
5 Marion County 329106
6 Jackson County 211587
7 Deschutes County 174392
8 Linn County 120303
9 Douglas County 107260
10 Yamhill County 101447
11 Benton County 88443
12 Josephine County 84606
13 Polk County 79012
14 Umatilla County 76491
15 Klamath County 65742
16 Coos County 62696
17 Columbia County 49671
18 Lincoln County 47046
19 Clatsop County 37848
20 Malheur County 30228
21 Union County 25720
22 Tillamook County 25554
23 Wasco County 25469
24 Hood River County 22925
25 Jefferson County 22540
26 Curry County 22329
27 Crook County 21465
28 Baker County 15899
29 Morrow County 11130
30 Lake County 7789
31 Grant County 7209
32 Harney County 7154
33 Wallowa County 6810
34 Gilliam County 1866
35 Sherman County 1691
36 Wheeler County 1327