Multnomah County Flag

Multnomah County

State:
Oregon
County Seat:
Portland

Multnomah County's estimated 2025 population is 797,523 with a growth rate of 0.2% in the past year according to the most recent United States census data. Multnomah County is the largest county in Oregon. The 2010 population was 737,320 and has seen a growth of 8.17% since that time.

797,523
Total Population
1,850
Population Density (mi²)
1
Population Rank (State)
1.6K 0.2%
Annual Population Growth

Multnomah County Population

Demographics

Economics and Income Statistics

Sources

  1. City and Town Population Totals: 2020-2024
  2. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  3. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  4. American Community Survey (2009 - 2013)
  5. Census QuickFacts
  6. Historical Populations of States and Counties (1790 - 1990)