Clinton County IL Information


Clinton County Subdivisions

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


Total Population 38,772
Daytime Population: Workers 13,067
Daytime Population: Residents 17,529
Total Daytime Population (TDP) 30,596
Ratio TDP/Total Population1 0.79
Population in Households 36,700
Population in Familes 30,123
Population in Group Qrtrs 2,072
Population Density2 82
Diversity Index3 19


Median Household Income $59,470
Average Household Income $75,978
Per Capita Income $28,932


Total Housing Units 15,877 (100%)
Owner Occupied HU 11,038 (69.5%)
Renter Occupied HU 3,283 (20.7%)
Vacant Housing Units 1,556 ( 9.8%)
Median Home Value $126,963
Average Home Value $152,158


Total Households 14,321
Average Household Size 2.56
Family Households 9,871
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 0.36% 0.41%
Households 0.31% 0.38%
Families 0.16% 0.28%
Median Household Income   2.27%
Per Capita Income   2.71%


Clinton County IL - Peer Comparisons by Rank and Percentile

The table below compares Clinton 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 # 36 66th
Population Density # 31 71st
Diversity Index # 55 47th
Median Household Income # 12 89th
Per Capita Income # 22 79th

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