Multnomah County OR Information


Multnomah County Subdivisions

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  1. Multnomah County 2018 Demographic Data
  2. Growth Rates forMultnomah 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

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


Total Population 818,453
Population in Households 798,623
Population in Familes 542,681
Population in Group Qrtrs 19,830
Population Density2 1,898
Diversity Index3 55


Median Household Income $60,995
Average Household Income $87,119
Per Capita Income $36,059


Total Housing Units 352,367 (100%)
Owner Occupied HU 175,129 (49.7%)
Renter Occupied HU 158,270 (44.9%)
Vacant Housing Units 18,968 ( 5.4%)
Median Home Value $335,178
Average Home Value $390,546


Total Households 333,399
Average Household Size 2.4
Family Households 176,343
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 1.31% 1.3%
Households 1.1% 1.23%
Families 0.92% 1.11%
Median Household Income   2.35%
Per Capita Income   2.38%


Multnomah County OR - Peer Comparisons by Rank and Percentile

The table below compares Multnomah 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 # 1 100th
Population Density # 1 100th
Diversity Index # 8 81st
Median Household Income # 6 86th
Per Capita Income # 3 94th

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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