DeKalb County IL Information


DeKalb County Subdivisions

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


Total Population 105,657
Population in Households 99,595
Population in Familes 74,443
Population in Group Qrtrs 6,062
Population Density2 167
Diversity Index3 46


Median Household Income $56,548
Average Household Income $72,267
Per Capita Income $27,673


Total Housing Units 41,854 (100%)
Owner Occupied HU 22,530 (53.8%)
Renter Occupied HU 16,664 (39.8%)
Vacant Housing Units 2,660 ( 6.4%)
Median Home Value $186,514
Average Home Value $216,631


Total Households 39,194
Average Household Size 2.54
Family Households 23,820
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 0.06% 0.58%
Households 0.22% 0.67%
Families 0.02% 0.53%
Median Household Income   1.45%
Per Capita Income   2.35%


DeKalb County IL - Peer Comparisons by Rank and Percentile

The table below compares DeKalb 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 # 20 81st
Population Density # 18 83rd
Diversity Index # 18 83rd
Median Household Income # 20 81st
Per Capita Income # 43 59th

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