Columbia County WA Information


Columbia County Subdivisions

Columbia County WA Data & Demographics (As of July 1, 2018)


Total Population 4,063
Population in Households 3,988
Population in Familes 3,187
Population in Group Qrtrs 75
Population Density1 5
Diversity Index2 29


Median Household Income $49,764
Average Household Income $73,394
Per Capita Income $32,244


Total Housing Units 2,164 (100%)
Owner Occupied HU 1,263 (58.4%)
Renter Occupied HU 487 (22.5%)
Vacant Housing Units 414 (19.1%)
Median Home Value $195,911
Average Home Value $278,266


Total Households 1,750
Average Household Size 2.28
Family Households 1,142
Average Family Size 3
  1. Population Density = Total Population per square mile.
  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 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.


2010-2017 2017-2022
Population -0.04% -0.2%
Households -0.08% -0.23%
Families -0.15% -0.26%
Median Household Income   3.3%
Per Capita Income   3.78%


Columbia County WA - Peer Comparisons by Rank and Percentile

The table below compares Columbia County to the other 39 counties and county equivalents in Washington 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 # 38 5th
Population Density # 36 8th
Diversity Index # 30 26th
Median Household Income # 28 31st
Per Capita Income # 13 69th

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