1st most populous of 36
With 795,897 residents in 2024, Multnomah County ranks 1st by population among Oregon's 36 counties and is home to 18.6% of the state's residents.

Multnomah County has the lowest homeownership rate in Oregon (53.4%) and the largest economy ($90.6 billion GDP).
Multnomah County is home to 795,897 people (2024 estimate) on 431 square miles of land. This page brings together official U.S. Census Bureau population estimates since 2000, the components of change—births, deaths and migration—American Community Survey indicators on income, housing, poverty and education, BEA economic accounts and BLS unemployment.
Pick an indicator to see its long-run evolution.
U.S. Census Bureau: intercensal estimates 2000–2009, Vintage 2020 (2010–2019) and Vintage 2024 (2020–2024), July 1.
| Indicator | Value | Year and source |
|---|---|---|
| Population estimate | 795,897 | 2024 · U.S. Census Bureau |
| Population, 2010 Census | 735,334 | 2010 · U.S. Census Bureau |
| Population, 2000 | 661,654 | July 1, 2000 · Census intercensal |
| Change since 2000 | +20.3% | 2000–2024 · Census |
| International migration | +5,660 | 2024 · Census Vintage 2024 |
| Domestic migration | −4,709 | 2024 · Census Vintage 2024 |
| Birth rate | 9.1 per 1,000 | 2024 · calculated |
| Death rate | 8.3 per 1,000 | 2024 · calculated |
| Population rank in Oregon | 1st of 36 | 2024 · calculated |
| Per capita personal income | $78,973 | BEA, 2024 · official |
| Gross domestic product | $90.6 billion | BEA, current dollars, 2024 · official |
| Median household income | $88,766 | ACS 2020–2024 5-year · official |
| Poverty rate | 12.6% | ACS 2020–2024 5-year · official |
| Bachelor’s degree or higher | 48.9% | Age 25+, ACS 2020–2024 5-year · official |
| Foreign-born residents | 13.0% | ACS 2020–2024 5-year · official |
| Median home value | $552,700 | ACS 2020–2024 5-year · official |
| Median gross rent | $1,646/month | ACS 2020–2024 5-year · official |
| Median age | 38.7 years | ACS 2020–2024 5-year · official |
| Households | 349,803 | ACS 2020–2024 5-year · official |
| Owner-occupied homes | 53.4% | ACS 2020–2024 5-year · official |
Comparable indicators for Multnomah County, Oregon and the United States.
| Indicator | County | Oregon | U.S. | Reference |
|---|---|---|---|---|
| Population change 2020–2024 | −2.4% | +0.8% | +2.6% | Census Vintage 2024 |
| Birth rate (per 1,000) | 9.1 | 9.1 | 10.6 | 2024 |
| Death rate (per 1,000) | 8.3 | 10.0 | 9.1 | 2024 |
| Net migration rate (per 1,000) | 1.2 | 5.2 | 8.2 | 2024 |
| Population density (/mi²) | 1846.5 | 44.5 | 96.3 | 2024 |
| Per capita personal income | $78,973 | $70,823 | $73,204 | BEA, 2024 |
| Median household income | $88,766 | $83,011 | $80,734 | ACS 2020–2024 5-year |
| Poverty rate | 12.6% | 11.9% | 12.5% | ACS 2020–2024 5-year |
| Bachelor’s degree or higher | 48.9% | 36.8% | 35.7% | Age 25+, ACS 2020–2024 5-year |
| Foreign-born residents | 13.0% | 9.8% | 14.1% | ACS 2020–2024 5-year |
| Median home value | $552,700 | $477,600 | $332,700 | ACS 2020–2024 5-year |
| Median gross rent | $1,646/month | $1,525/month | $1,413/month | ACS 2020–2024 5-year |
| Median age | 38.7 years | 40.4 years | 38.9 years | ACS 2020–2024 5-year |
| Owner-occupied homes | 53.4% | 63.3% | 65.2% | ACS 2020–2024 5-year |
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With 795,897 residents in 2024, Multnomah County ranks 1st by population among Oregon's 36 counties and is home to 18.6% of the state's residents.
Its population went from 661,654 in 2000 to 795,897 in 2024, a change of +20.3%, compared with +24.6% for Oregon as a whole.
In the year to July 2024 the county recorded 7,250 births and 6,591 deaths, so births outnumbered deaths by 659.
Annual Census estimates since 2000 put the county's highest population at 816,321 in 2020. The 2024 figure is 20,424 lower.
Multnomah County has about 1846.5 residents per square mile of land, ranking 1st of 36 counties; Oregon averages 44.5.
With a median household income of $88,766 (ACS 2020–2024 5-year), the county ranks 6th of 36 Oregon counties; the state median is $83,011.
Its economy produced $90.6 billion of GDP in 2024 (BEA), 1st largest among 36 Oregon counties.
Real GDP grew 0.5% in 2024, adjusted for inflation (BEA, chained 2017 dollars).