Cowlitz County WA Information


Cowlitz County Subdivisions

Cowlitz County WA Data & Demographics (As of July 1, 2015)


Total Population 103,420
Population in Households 102,145
Population in Familes 81,913
Population in Group Qrtrs 1,275
Population Density1 91
Diversity Index2 35


Total Households 40,774
Average Household Size 2.51
Family Households 27,480
Average Family Size 3


Total Housing Units 44,140 (100%)
Owner Occupied HU 26,076 (59.1%)
Renter Occupied HU 14,698 (33.3%)
Vacant Housing Units 3,366 ( 7.6%)
Median Home Value $197,337
Average Home Value $223,848


Median Household Income $47,272
Average Household Income $60,111
Per Capita Income $23,872
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.19% 0.11%
Households 0.25% 0.15%
Families 0.17% 0.11%
Median Household Income   2.46%
Per Capita Income   2.52%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood 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.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.


Cowlitz County WA - Peer Comparisons by Rank and Percentile

The table below compares Cowlitz County to the other 39 counties and county equivalents in Washington by rank and percentile using July 1, 2015 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 # 12 72nd
Population Density1 # 12 72nd
Diversity Index2 # 27 33rd
Median Household Income # 19 54th
Per Capita Income # 23 44th

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