Multnomah County , Oregon

Multnomah County: County in Oregon, United States

Multnomah County locator map
Location of Multnomah County on Oregon map.


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 9 years in 2019 county had an estimated population of 812,855 inhabitants. Its county seat is Portland. The county was created 166 years ago in 1854.


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.

Multcocourthouse image

The largest city of Multnomah County is Portland with a population of 654,741. Other cities include, Gresham population 109,381, Troutdale population 16,183, Fairview population 9,280 and North Portland population 7,000. See all Multnomah County cities & populated places.

Multcocourthouse image

Multnomah County map

Multnomah County Quick Facts

Population : 812,855 (2019)
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%
Named for : Multnomah people
Altitude : 344 feet / 105 meters
Capital : Portland
Establishment : December 12, 1854
Time Zone : Pacific Time Zone
Local time : 02:17:10 (27th July 2021)
Density : 674 Pop. per km² as of 2019
Population growth : 9.54% (2010-2019)

Multnomah County has 6 neighbours.

  • Portland


The population of Multnomah County increased by 9.54% in 9 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

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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, you can see a list of people who born in Multnomah County.

Multnomah County Populated Places

Cities, Towns, Neighborhoods & Other Populated Places in Multnomah County.

City Name Population Title
Portland 654,741 City in Oregon, USA
Gresham 109,381 City in Oregon, USA
Lents 20,156
Troutdale 16,183 City in Oregon, USA
Fairview 9,280
North Portland 7,000
Kenton 7,000
Wood Village 4,093 City in Oregon, USA
Maywood Park 849 City in Oregon, USA

Oregon Other Counties (more counties)

County Name Population Title
Oregon 4,217,737 State of the United States of America
Portland 654,741 City in Oregon, USA
Washington County 601,592 County in Oregon, United States
Clackamas County 418,187 County in Oregon, United States
Lane County 382,067 County in Oregon, United States
Marion County 347,818 County in Oregon, United States
Jackson County 220,944 County in Oregon, United States
Deschutes County 197,692 County in Oregon, United States
Salem 174,365 City and capital of Oregon, USA
Eugene 172,622 City in Lane County, Oregon, United States
Linn County 129,749 County in Oregon, United States
Terrebonne 117,664 Census-designated place in Deschutes County, Oregon
Douglas County 110,980 County in Oregon, United States
Gresham 109,381 City in Oregon, USA
Hillsboro 109,128 City in Oregon, USA
Yamhill County 107,100 County in Oregon, United States

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