Marshall County IL Information


Marshall County Subdivisions

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


Total Population 12,273
Daytime Population: Workers 4,055
Daytime Population: Residents 6,489
Total Daytime Population (TDP) 10,544
Ratio TDP/Total Population1 0.86
Population in Households 12,018
Population in Familes 9,854
Population in Group Qrtrs 255
Population Density2 32
Diversity Index3 15


Median Household Income $52,604
Average Household Income $66,185
Per Capita Income $27,766


Total Housing Units 5,900 (100%)
Owner Occupied HU 3,943 (66.8%)
Renter Occupied HU 1,064 (18.0%)
Vacant Housing Units 893 (15.1%)
Median Home Value $100,203
Average Home Value $131,112


Total Households 5,007
Average Household Size 2.4
Family Households 3,405
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 -0.41% -0.6%
Households -0.42% -0.62%
Families -0.57% -0.71%
Median Household Income   1.64%
Per Capita Income   2.82%


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, 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 # 85 18th
Population Density # 73 29th
Diversity Index # 62 40th
Median Household Income # 30 72nd
Per Capita Income # 34 68th

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