Marion County OR Information


Marion County Subdivisions

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  1. Marion County 2018 Demographic Data
  2. Growth Rates forMarion County (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Oregon Research Tools (Easy Tools & Current Data)
  3. Oregon Data Comparison Tool - 2018 Demographics

Marion County OR Data & Demographics (As of July 1, 2018)


Total Population 338,899
Population in Households 328,301
Population in Familes 264,644
Population in Group Qrtrs 10,598
Population Density2 287
Diversity Index3 66


Median Household Income $54,645
Average Household Income $72,103
Per Capita Income $26,273


Total Housing Units 127,791 (100%)
Owner Occupied HU 70,785 (55.4%)
Renter Occupied HU 49,397 (38.7%)
Vacant Housing Units 7,609 ( 6.0%)
Median Home Value $243,961
Average Home Value $297,905


Total Households 120,182
Average Household Size 2.73
Family Households 81,123
Average Family Size 3
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  2. Population Density = Total Population per square mile.
  3. 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 race 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.


2010-2018 2018-2023
Population 0.88% 1.02%
Households 0.75% 0.96%
Families 0.63% 0.88%
Median Household Income   1.79%
Per Capita Income   2.47%


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, 2018 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
Diversity Index # 4 92nd
Median Household Income # 11 72nd
Per Capita Income # 18 53rd

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

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Oregon Census Data Comparison Tool

Compare Oregon July 1, 2018 Data
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