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 (69.2%)
Two or more races (14.8%)
Other race (10.3%)
Asian (2.1%)
Native American (1.3%)
Black or African American (1.1%)
Native Hawaiian or Pacific Islander (1.1%)
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
