Marion County Flag

Marion County

State:
Oregon
County Seat:
Salem

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.

346,785
Total Population
294
Population Density (mi²)
5
Population Rank (State)
22 0.01%
Annual Population Growth

Marion County Population

Marion County Population

Data after 2023 is projected based on recent change

Demographics

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.

Population by Race

Race
Population
Percentage (of total)
White239,70369.17%
Two or more races51,43714.84%
Other race35,87710.35%
Asian7,3312.12%
Native American4,4571.29%
Black or African American3,9001.13%
Native Hawaiian or Pacific Islander3,8271.1%

Marion County Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

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%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
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

$45,217

Average Income

$74,624

Median Household Income

13.13%

Poverty Rate