Oregon Voting-age Population By County in 2021 (ACS-5Yrs)

Updated on February 28, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, the voting-age population of Oregon was 3.33M which was 79.24% of the total Oregon population. Among all Oregon counties, Multnomah had the highest voting-age population (659.59K), followed by Washington (461.43K), and Clackamas (328.35K).

On the other hand, the counties with the least voting-age population were: Wheeler (1.20K), Sherman (1.43K), and Gilliam (1.62K).

The chart and table below shows the voting-age population of each county and the percentage of each county's population that are of voting-age.

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

Related Topics: Oregon ACS-5Yrs Estimates, 2021 Topic List.

Data Source: US Census - ACS 5-Year Estimates, 2021 Census.

Oregon Voting-age Population By County in 2021

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County	Voting-age Population	% of County Population
Baker	13166	79.61
Benton	79276	83.74
Clackamas	328346	78.44
Clatsop	33146	81.40
Columbia	41416	79.07
Coos	52699	81.55
Crook	19321	79.51
Curry	19902	85.66
Deschutes	156072	80.05
Douglas	89045	80.45
Gilliam	1617	82.75
Grant	5960	82.49
Harney	5932	79.58
Hood River	18296	76.50
Jackson	175853	79.33
Jefferson	18526	76.45
Josephine	70458	80.35
Klamath	53864	78.18
Lake	6548	80.65
Lane	310588	81.62
Lincoln	41445	83.11
Linn	98428	77.38
Malheur	23333	74.52
Marion	259561	75.45
Morrow	8678	72.53
Multnomah	659586	81.43
Polk	66791	77.35
Sherman	1425	79.88
Tillamook	22008	81.12
Umatilla	59367	74.67
Union	20438	77.84
Wallowa	5961	81.32
Wasco	20649	77.62
Washington	461425	77.30
Wheeler	1200	81.25
Yamhill	83365	77.89