Montgomery County IL Information


Montgomery County Subdivisions

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


Total Population 28,847
Daytime Population: Workers 11,644
Daytime Population: Residents 15,635
Total Daytime Population (TDP) 27,279
Ratio TDP/Total Population1 0.95
Population in Households 26,777
Population in Familes 21,540
Population in Group Qrtrs 2,070
Population Density2 41
Diversity Index3 14


Median Household Income $46,905
Average Household Income $61,972
Per Capita Income $25,023


Total Housing Units 13,080 (100%)
Owner Occupied HU 8,619 (65.9%)
Renter Occupied HU 2,741 (21.0%)
Vacant Housing Units 1,720 (13.1%)
Median Home Value $89,448
Average Home Value $122,131


Total Households 11,360
Average Household Size 2.36
Family Households 7,521
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 -0.59% -0.66%
Households -0.35% -0.65%
Families -0.51% -0.75%
Median Household Income   1.97%
Per Capita Income   2.62%


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, 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 # 51 51st
Population Density # 61 41st
Diversity Index # 66 36th
Median Household Income # 66 36th
Per Capita Income # 68 34th

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