Jefferson County WA Information


Jefferson County Subdivisions

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


Total Population 31,928
Population in Households 31,278
Population in Familes 23,109
Population in Group Qrtrs 650
Population Density1 18
Diversity Index2 25


Median Household Income $53,754
Average Household Income $70,502
Per Capita Income $33,675


Total Housing Units 18,867 (100%)
Owner Occupied HU 11,206 (59.4%)
Renter Occupied HU 3,834 (20.3%)
Vacant Housing Units 3,827 (20.3%)
Median Home Value $323,815
Average Home Value $381,865


Total Households 15,040
Average Household Size 2.08
Family Households 8,931
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 0.81% 1.08%
Households 0.83% 1.11%
Families 0.75% 1.07%
Median Household Income   2.22%
Per Capita Income   1.98%


Jefferson County WA - Peer Comparisons by Rank and Percentile

The table below compares Jefferson 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 # 27 33rd
Population Density # 29 28th
Diversity Index # 34 15th
Median Household Income # 19 54th
Per Capita Income # 7 85th

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