Counties in Oregon by population

Name: Counties in Oregon by population, 2021
Creator: U.S. Census Bureau
License: Public domain (US federal government work, citation requested)

Multnomah County had the highest population of 36 counties in 2021, at 805,130. Wheeler County had the lowest, at 1,453. The median was 46,476 and the figure for Oregon was 4.25 million. Source: the U.S. Census Bureau.

Highest805,130Multnomah County

Lowest1,453Wheeler County

Median46,47636 counties

Oregon4,254,691History

All counties, 2021

CSV Chart (SVG)

persons. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

Rank	Counties	2021 persons	Change on 2020
1	Multnomah County	805,130	-1.4%
2	Washington County	602,382	+0.2%
3	Clackamas County	423,877	+0.3%
4	Lane County	386,175	+0.5%
5	Marion County	347,887	+0.5%
6	Jackson County	224,649	+0.4%
7	Deschutes County	205,280	+2.9%
8	Linn County	130,110	+0.9%
9	Douglas County	112,185	+0.8%
10	Yamhill County	108,019	+0.3%
11	Benton County	93,012	-0.6%
12	Polk County	89,436	+1.7%
13	Josephine County	88,620	+0.5%
14	Umatilla County	79,748	-0.2%
15	Klamath County	70,424	+1.1%
16	Coos County	65,166	+0.3%
17	Columbia County	53,175	+0.9%
18	Lincoln County	51,019	+1%
19	Clatsop County	41,932	+1.9%
20	Malheur County	31,684	+0.1%
21	Tillamook County	27,807	+1.3%
22	Wasco County	26,702	+0.3%
23	Union County	26,288	+0.4%
24	Crook County	25,772	+3.4%
25	Jefferson County	25,094	+2.1%
26	Hood River County	24,031	+0.6%
27	Curry County	23,730	+0.9%
28	Baker County	16,882	+0.9%
29	Morrow County	12,359	+1.1%
30	Lake County	8,285	+1.4%
31	Harney County	7,604	+1.3%
32	Wallowa County	7,554	+2%
33	Grant County	7,293	+0.7%
34	Gilliam County	2,010	-0.2%
35	Sherman County	1,917	+2%
36	Wheeler County	1,453	-0.5%

Other periods

About this ranking

Resident population. Spain and the EU: 1 January, with Spanish figures from the official municipal register (Padrón). United States: Census Bureau population estimates for 1 July. Other countries and the World: World Bank mid-year estimates, which count all residents regardless of legal status or citizenship.

For Denmark, Statistics Denmark counts the registered resident population on 1 January. Greenland and the Faroe Islands are excluded. The annual series selects the first-quarter reference date from FOLK1A. The World Bank series exists for every country, so use it (through compare) to rank countries on one basis.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-08.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

Rank Counties in Oregon by population using official data, and cite the source.

rank_places {"indicator":"population","level":"province","within":"Oregon","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=population&level=province&within=Oregon&limit=10

Connect Claude, ChatGPT or Cursor in one step. The trial answers 25 calls a day without an account.

Questions

Which county has the highest population?

Multnomah County, with 805,130 in 2021, according to the U.S. Census Bureau.

Which county has the lowest population?

Wheeler County, with 1,453 in 2021.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). Retrieved 2026-10-08.