Multnomah County's estimated 2026 population is 796,310 with a growth rate of 0.12% 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% since that time.
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
