Marion County's estimated 2026 population is 358,336 with a growth rate of 0.72% in the past year according to the most recent United States census data. Marion County is the 5th largest county in Oregon. The 2010 population was 315,948 and has seen a growth of 13.42% since that time.
Data after 2023 is projected based on recent change
Overall: 37.5 years
Female: 38.5 years
Male: 36.5 years
There are 267,048 adults, (58,378 of whom are seniors) in Marion County.
Female: 173,830 (49.8%)
Male: 175,414 (50.2%)
The racial composition of Marion County includes 66.25% White, 11.06% other race, and smaller percentages for Asian, Native American, Black or African American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 231,379 | 66.25% |
| Two or more races | 59,819 | 17.13% |
| Other race | 38,637 | 11.06% |
| Asian | 7,059 | 2.02% |
| Native American | 4,297 | 1.23% |
| Black or African American | 4,236 | 1.21% |
| Native Hawaiian or Pacific Islander | 3,817 | 1.09% |
Marion County's average per capita income is $47,462. Household income levels show a median of $77,351. The poverty rate stands at 13.03%.
Name | Median | Mean |
|---|---|---|
| Married Families | $108,721 | $133,341 |
| Families | $91,259 | $115,699 |
| Households | $77,351 | $100,449 |
| Non Families | $48,228 | $61,565 |
Average Income
Median Household Income
Poverty Rate
