COUNTY · OR
Multnomah County, Oregon
Multnomah County is a county in Oregon with FIPS code 41051 and an estimated population of 789,698 (Census 2023), 1st largest of 36 in the state.
County facts
- Name
- Multnomah County
- State
- Oregon
- Type
- county
- FIPS code
- 41051
- State FIPS
- 41
- Population (2023)
- 789,698
- Change since 2020
- -3.3%
- State rank
- 1 of 36
Population is the Census Bureau’s Vintage 2023 estimate.
Major cities in Multnomah County
Other counties in Oregon
Questions
What is the FIPS code for Multnomah County?
Multnomah County, Oregon has the five-digit FIPS code 41051: 41 for the state and 051 for the county.
What state is Multnomah County in?
Multnomah County is in Oregon.
How do I know if an address is in this county?
Use the address lookup. ZIP codes and city names can cross county lines, so an address is the reliable check.
Sources: U.S. Census Bureau geographic reference files; Census Bureau Population Estimates, Vintage 2023. Last reviewed 2026-10-27.