Marion County OR Information


Marion County Subdivisions

Marion County OR Data & Demographics (As of July 1, 2023)


Total Population 353,568 (100%)
Population in Households 342,906 (97.0%)
Population in Families 275,389 (77.9%)
Population in Group Quarters1 10,662 ( 3.0%)
Population Density 299
Diversity Index2 72


Median Household Income $67,296
Average Household Income $92,887
% of Income for Mortgage4 35%
Per Capita Income $33,143
Wealth Index5 82
Socioeconomic Status Index6 Low (43.6)


Total HU (Housing Units) 131,676 (100%)
Owner Occupied HU 77,794 (59.1%)
Renter Occupied HU 47,831 (36.3%)
Vacant Housing Units 6,051 ( 4.6%)
Median Home Value $392,573
Average Home Value $429,205
Housing Affordability Index3 68


Total Households 125,625
Average Household Size 2.73
Family Households 82,773
Average Family Size 3.00
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
  6. The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.


2020-2023 2023-2028
Population 0.68% 0.34%
Households 0.76% 0.42%
Families   0.33%
Median Household Income   3.14%
Per Capita Income   3.13%
Owner Occupied HU   0.65%


Marion County OR - Peer Comparisons by Rank and Percentile

The table below compares Marion County to the other 36 counties and county equivalents in Oregon by rank and percentile using July 1, 2023 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 5 89th
Population Density # 3 94th
Median Household Income # 10 75th
Housing Affordability Index # 14 39th
Per Capita Income # 23 39th
Diversity Index # 4 92nd

Additional comparisons and rankings can be made with a VERY EASY TO USE Oregon Census Data Comparison Tool.

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Compare Oregon July 1, 2023 Data
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  4. See the References & Data Sources page for more information about methodology and sources of data.