Multnomah County, Oregon
Multnomah County: county in Oregon, United States
About
Multnomah County is a county located in the U.S. state of Oregon. As of the 2010 census, the population was 735,334 and a population density of 610 people per km². After 10 years in 2020 county had an estimated population of 815,637 inhabitants. Its county seat is Portland. The county was created 171 years ago in 1854.
County Snapshot
Multnomah County at a glance
Multnomah County currently has 5 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.
Mapped populated places
5
These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.
Oregon counties
36
Open related pagesLargest city
PortlandPopulation 656,751
Top linked places
Quick Facts about Multnomah County
| Population | 815,637 (2020) |
| Country | United States of America |
| State | Oregon (United States) |
| Twitter username | multco |
| Area | 1206 km2 |
| Water as percent of area | 7.4% |
| Land as percent of area | 92.6% |
| Latitude & Longitude | 45.5469,-122.4153 |
| Named for | Multnomah people |
| Altitude | 344 feet / 105 meters |
| Capital | Portland |
| Establishment | December 22, 1854 |
| Time Zone | Pacific Time Zone |
| Local time | 02:09:23 (15th April 2026) |
| Density | 676 Pop. per km² as of 2020 |
| Population growth | 9.85% (2010-2020) |
| Weather | 39℉ Rain 7-days weather |
Geography
Multnomah County is located at 45°32'49"N 122°24'55"W (45.5468700, -122.4153400). It has 6 neighbors: Columbia County, Clackamas County, Hood River County, Washington County, Clark County and Skamania County.
Multnomah County map
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The largest city of Multnomah County is Portland with a population of 656,751. Other cities include, Gresham population 110,031, Troutdale population 16,403, Wood Village population 4,081 and Maywood Park population 852. See all Multnomah County cities & populated places.
Multnomah County Populated Places
Cities, towns, neighborhoods & other populated places in Multnomah County.
| City Name | Population | Title |
|---|---|---|
| Portland | 656,751 | The twenty-sixth most populous city in the United States and the center of the Portland metropolitan area. |
| Gresham | 110,031 | The second most populous city in Multnomah County, Oregon. |
| Troutdale | 16,403 | City in Oregon, USA |
| Wood Village | 4,081 | City in Oregon, USA |
| Maywood Park | 852 | City in Oregon, USA |
Weather
Rain. Cloudy. Low around 39, with temperatures rising to around 42 overnight. Southwest wind 6 to 21 mph, with gusts as high as 33 mph. Chance of prec...
7-Day Forecast- Portland
Demographics
The population of Multnomah County increased by 9.85% in 10 years.
| Year | Population | % Change | Method |
|---|---|---|---|
| 2010 | 735,334 | - | census |
| 2011 | 749,742 | 1.92% | estimation process |
| 2012 | 760,198 | 1.38% | estimation process |
| 2013 | 766,532 | 0.83% | estimation process |
| 2014 | 778,430 | 1.53% | estimation process |
| 2015 | 790,008 | 1.47% | estimation process |
| 2016 | 803,212 | 1.64% | estimation process |
| 2017 | 807,885 | 0.58% | estimation process |
| 2018 | 809,072 | 0.15% | estimation process |
| 2019 | 812,855 | 0.47% | estimation process |
| 2020 | 815,637 | 0.34% | estimation process |
People born in Multnomah County (3)
People born in Multnomah County, including journalist, author, and politician during the middle of the 20th century Richard L. Neuberger, politician John Hicklin Hall, politician Chandler Huntington, .
More notable people
Oregon Other Counties (more counties)
| County Name | Population | Title |
|---|---|---|
| Portland | 656,751 | The twenty-sixth most populous city in the United States and the center of the Portland metropolitan area. |
| Washington County | 603,514 | County in Oregon, United States |
| Clackamas County | 421,596 | County in Oregon, United States |
| Lane County | 382,986 | County in Oregon, United States |
| Marion County | 349,204 | County in Oregon, United States |
| Jackson County | 221,844 | County in Oregon, United States |
| Deschutes County | 201,769 | County in Oregon, United States |
| Salem | 175,891 | The capital of Oregon. |
| Eugene | 173,236 | The second most populous city in Oregon. |
| Linn County | 131,054 | County in Oregon, United States |
| Terrebonne | 117,664 | Census-designated place in Deschutes County, Oregon |
| Douglas County | 111,364 | County in Oregon, United States |
| Hillsboro | 110,985 | The most populous city in Washington County, Oregon. |
| Gresham | 110,031 | The second most populous city in Multnomah County, Oregon. |
| Yamhill County | 107,664 | County in Oregon, United States |
| Bend | 101,886 | The most populous city in Deschutes County, Oregon. |