St. Clair County IL Information

Advertisement

St. Clair County Subdivisions

Jump to... (On This Page!)
  1. St. Clair County 2018 Demographic Data
  2. Growth Rates forSt. Clair County (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Illinois Research Tools (Easy Tools & Current Data)
  3. Illinois Data Comparison Tool - 2018 Demographics

St. Clair County IL Data & Demographics (As of July 1, 2018)

POPULATION

Total Population 266,425
Population in Households 261,739
Population in Familes 214,290
Population in Group Qrtrs 4,686
Population Density2 405
Diversity Index3 54
 

INCOME

Median Household Income $53,652
Average Household Income $73,475
Per Capita Income $29,211

HOUSING

Total Housing Units 117,807 (100%)
Owner Occupied HU 67,113 (57.0%)
Renter Occupied HU 36,781 (31.2%)
Vacant Housing Units 13,913 (11.8%)
Median Home Value $135,035
Average Home Value $167,040
 

HOUSEHOLDS

Total Households 103,894
Average Household Size 2.52
Family Households 68,928
Average Family Size 3
NOTES
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  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.

GROWTH RATE / YEAR

2010-2018 2018-2023
Population -0.16% -0.27%
Households -0.13% -0.25%
Families -0.31% -0.37%
Median Household Income   1.37%
Per Capita Income   2.29%

Advertisement

St. Clair County IL - Peer Comparisons by Rank and Percentile

The table below compares St. Clair 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 # 9 92nd
Population Density # 8 93rd
Diversity Index # 9 92nd
Median Household Income # 30 72nd
Per Capita Income # 31 71st

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

Quick & Easy Ways to...

  1. Get Current Demographic Data for Cities, Towns, and ZIP Codes
  2. View Boundary Maps, for Cities, Towns, and ZIP Codes
  3. Locate Physical, Cultural, and Historical Features
  4. Research Public Schools & Attendance Zones

Illinois Census Data Comparison Tool

Compare Illinois July 1, 2018 Data
Data:
Locations:
Highest or Lowest:
Results: