Marion County's estimated 2025 population is 346,785 with a growth rate of 0.01% 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 9.76% since that time.
Data after 2023 is projected based on recent change
The racial composition of Marion County includes 69.17% White, 10.35% other race, and smaller percentages for Asian, Native American, Black or African American, Native Hawaiian or Pacific Islander and multiracial populations.
White
Two or more races
Other race
Asian
Native American
Black or African American
Native Hawaiian or Pacific Islander
Race | Population | Percentage (of total) |
|---|---|---|
| White | 239,703 | 69.17% |
| Two or more races | 51,437 | 14.84% |
| Other race | 35,877 | 10.35% |
| Asian | 7,331 | 2.12% |
| Native American | 4,457 | 1.29% |
| Black or African American | 3,900 | 1.13% |
| Native Hawaiian or Pacific Islander | 3,827 | 1.1% |
Married
Widowed
Divorced
Separated
Never Married
Marion County's average per capita income is $45,217. Household income levels show a median of $74,624. The poverty rate stands at 13.13%.
Name | Median | Mean |
|---|---|---|
| Married Families | $106,274 | $126,379 |
| Families | $88,229 | $109,965 |
| Households | $74,624 | $95,954 |
| Non Families | $45,483 | $59,257 |
Average Income
Median Household Income
Poverty Rate
