Franklin County IL Information


Franklin County Subdivisions

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


Total Population 39,782
Population in Households 39,265
Population in Familes 31,450
Population in Group Qrtrs 517
Population Density1 97
Diversity Index2 10


Median Household Income $39,949
Average Household Income $52,405
Per Capita Income $22,211


Total Housing Units 18,752 (100%)
Owner Occupied HU 11,729 (62.5%)
Renter Occupied HU 5,047 (26.9%)
Vacant Housing Units 1,976 (10.5%)
Median Home Value $74,805
Average Home Value $100,085


Total Households 16,776
Average Household Size 2.34
Family Households 10,852
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 0.07% -0.12%
Households 0.12% -0.09%
Families -0.07% -0.21%
Median Household Income   0.76%
Per Capita Income   1.54%


Franklin County IL - Peer Comparisons by Rank and Percentile

The table below compares Franklin 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 # 35 67th
Population Density # 26 75th
Diversity Index # 78 25th
Median Household Income # 97 6th
Per Capita Income # 99 4th

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