Marshall County IL Information


Marshall County Subdivisions

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


Total Population 12,405
Population in Households 12,150
Population in Familes 9,965
Population in Group Qrtrs 255
Population Density1 32
Diversity Index2 15


Total Households 5,079
Average Household Size 2.39
Family Households 3,460
Average Family Size 3


Total Housing Units 5,894 (100%)
Owner Occupied HU 4,012 (68.1%)
Renter Occupied HU 1,067 (18.1%)
Vacant Housing Units 815 (13.8%)
Median Home Value $98,251
Average Home Value $127,206


Median Household Income $52,043
Average Household Income $63,361
Per Capita Income $26,699
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population -0.3% -0.54%
Households -0.26% -0.52%
Families -0.41% -0.61%
Median Household Income   0.18%
Per Capita Income   1.13%
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.


Marshall County IL - Peer Comparisons by Rank and Percentile

The table below compares Marshall 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 # 85 18th
Population Density1 # 75 27th
Diversity Index2 # 63 39th
Median Household Income # 28 74th
Per Capita Income # 33 69th

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