Douglas County IL Information


Douglas County Subdivisions

Douglas County IL Data & Demographics (As of July 1, 2018)


Total Population 19,857
Population in Households 19,689
Population in Familes 16,538
Population in Group Qrtrs 168
Population Density2 48
Diversity Index3 25


Median Household Income $52,620
Average Household Income $65,312
Per Capita Income $25,547


Total Housing Units 8,556 (100%)
Owner Occupied HU 5,634 (65.8%)
Renter Occupied HU 2,111 (24.7%)
Vacant Housing Units 811 ( 9.5%)
Median Home Value $111,049
Average Home Value $142,408


Total Households 7,745
Average Household Size 2.54
Family Households 5,323
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 -0.07% -0.26%
Households 0.04% -0.19%
Families -0.12% -0.3%
Median Household Income   0.96%
Per Capita Income   1.88%


Douglas County IL - Peer Comparisons by Rank and Percentile

The table below compares Douglas County to the other 102 counties and county equivalents in Illinois 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 # 58 44th
Population Density # 51 51st
Diversity Index # 44 58th
Median Household Income # 37 65th
Per Capita Income # 66 36th

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