Grundy County IL Information


Grundy County Subdivisions

Grundy County IL Data & Demographics (As of July 1, 2014)


Total Population 51,352
Population in Households 51,098
Population in Familes 43,381
Population in Group Qrtrs 254
Population Density1 123
Diversity Index2 29


Total Households 18,928
Average Household Size 2.7
Family Households 13,630
Average Family Size 3


Total Housing Units 20,420 (100%)
Owner Occupied HU 13,991 (68.5%)
Renter Occupied HU 4,937 (24.2%)
Vacant Housing Units 1,492 ( 7.3%)
Median Home Value $189,418
Average Home Value $208,037


Median Household Income $66,021
Average Household Income $76,877
Per Capita Income $28,401
  (Compound Annual Growth Rates)


2010-2014 2014-2019
Population 0.6% 0.49%
Households 0.48% 0.4%
Families 0.35% 0.31%
Median Household Income   2.93%
Per Capita Income   2.04%
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.


Grundy County IL - Peer Comparisons by Rank and Percentile

The table below compares Grundy County to the other 102 counties and county equivalents in Illinois by rank and percentile using July 1, 2014 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 # 30 72nd
Population Density1 # 22 79th
Diversity Index2 # 30 71st
Median Household Income # 9 92nd
Per Capita Income # 15 86th

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