Washington County IL Information


Washington County Subdivisions

Washington County IL Data & Demographics (As of July 1, 2017)


Total Population 14,716
Daytime Population: Workers 8,251
Daytime Population: Residents 6,583
Total Daytime Population (TDP) 14,834
Ratio TDP/Total Population1 1.01
Population in Households 14,470
Population in Familes 11,981
Population in Group Qrtrs 246
Population Density2 26
Diversity Index3 9


Median Household Income $55,501
Average Household Income $68,977
Per Capita Income $27,803


Total Housing Units 6,636 (100%)
Owner Occupied HU 4,643 (70.0%)
Renter Occupied HU 1,258 (19.0%)
Vacant Housing Units 735 (11.1%)
Median Home Value $119,841
Average Home Value $148,180


Total Households 5,901
Average Household Size 2.45
Family Households 4,048
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  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.


2010-2017 2017-2022
Population 0.0% -0.12%
Households -0.06% -0.16%
Families -0.22% -0.27%
Median Household Income   1.66%
Per Capita Income   2.52%


Washington County IL - Peer Comparisons by Rank and Percentile

The table below compares Washington County to the other 102 counties and county equivalents in Illinois by rank and percentile using July 1, 2017 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 # 76 26th
Population Density # 85 18th
Diversity Index # 80 22nd
Median Household Income # 19 82nd
Per Capita Income # 33 69th

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