Multnomah County's 2026 population is estimated at 799,149, reflecting a 0.2% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Multnomah County is the largest county in Oregon. The 2010 population was 737,320 and has grown 8.39% since 2010.
Data after 2023 is projected based on recent change
Overall: 38.7 years
Female: 39 years
Male: 38.4 years
There are 660,342 adults, (118,224 of whom are seniors) in Multnomah County.
Female: 402,830 (50.3%)
Male: 398,647 (49.7%)
The racial composition of Multnomah County includes 67.88% White, 7.51% Asian, 5.5% Black or African American, 4.41% other race, and smaller percentages for Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 544,065 | 67.88% |
| Two or more races | 105,111 | 13.11% |
| Asian | 60,157 | 7.51% |
| Black or African American | 44,061 | 5.5% |
| Other race | 35,363 | 4.41% |
| Native American | 7,827 | 0.98% |
| Native Hawaiian or Pacific Islander | 4,893 | 0.61% |
Multnomah County 's average per capita income is $57,736. Household income levels show a median of $88,766. The poverty rate stands at 12.59%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $141,928 | $179,436 |
| Families | $118,358 | $154,036 |
| Households | $88,766 | $122,099 |
| Non Families | $61,422 | $84,910 |
Average Income
Median Household Income
Poverty Rate
