Montgomery County IL Information


Montgomery County Subdivisions

Montgomery County IL Data & Demographics (As of July 1, 2016)


Total Population 29,836
Population in Households 27,417
Population in Familes 22,065
Population in Group Qrtrs 2,419
Population Density1 42
Diversity Index2 14


Total Households 11,641
Average Household Size 2.36
Family Households 7,718
Average Family Size 3


Total Housing Units 13,256 (100%)
Owner Occupied HU 8,865 (66.9%)
Renter Occupied HU 2,776 (20.9%)
Vacant Housing Units 1,615 (12.2%)
Median Home Value $88,743
Average Home Value $119,929


Median Household Income $43,256
Average Household Income $59,108
Per Capita Income $23,761
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population -0.14% -0.33%
Households -0.02% -0.27%
Families -0.18% -0.37%
Median Household Income   1.51%
Per Capita Income   1.51%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood 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.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.


Montgomery County IL - Peer Comparisons by Rank and Percentile

The table below compares Montgomery County to the other 102 counties and county equivalents in Illinois by rank and percentile using July 1, 2016 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 # 50 52nd
Population Density1 # 60 43rd
Diversity Index2 # 64 37th
Median Household Income # 70 32nd
Per Capita Income # 69 33rd

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