Marion County, OR — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
346,532
Male
173,657
50.1%
Female
172,875
49.9%
Median Age
37.2 yrs
Avg Household Size
2.7
Foreign Born
13.6%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher17.4%
High School or Higher34.2%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
5.4%
Disability
0.0%
Non-English Home
9.3%
Married
39.9%
Marion County, OR has a population of 346,532 according to 2023 Census Bureau estimates. The median age is 37.2 years. The largest racial or ethnic group is White at 69.2% of the population. 17.4% of residents hold a bachelor's degree or higher. 13.6% of residents are foreign-born.