Cass County IL Information


Cass County Subdivisions

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


Total Population 13,525
Population in Households 13,341
Population in Familes 10,745
Population in Group Qrtrs 184
Population Density2 36
Diversity Index3 52


Median Household Income $48,404
Average Household Income $60,392
Per Capita Income $23,578


Total Housing Units 5,795 (100%)
Owner Occupied HU 3,867 (66.7%)
Renter Occupied HU 1,387 (23.9%)
Vacant Housing Units 541 ( 9.3%)
Median Home Value $83,840
Average Home Value $120,306


Total Households 5,254
Average Household Size 2.54
Family Households 3,499
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 -0.1% -0.53%
Households -0.04% -0.49%
Families -0.21% -0.61%
Median Household Income   1.0%
Per Capita Income   1.69%


Cass County IL - Peer Comparisons by Rank and Percentile

The table below compares Cass 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 # 79 24th
Population Density # 67 34th
Diversity Index # 13 89th
Median Household Income # 65 37th
Per Capita Income # 89 14th

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