Piatt County IL Information


Piatt County Subdivisions

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


Total Population 17,251
Population in Households 17,179
Population in Familes 14,415
Population in Group Qrtrs 72
Population Density1 39
Diversity Index2 8


Total Households 6,984
Average Household Size 2.46
Family Households 4,923
Average Family Size 3


Total Housing Units 7,683 (100%)
Owner Occupied HU 5,546 (72.2%)
Renter Occupied HU 1,438 (18.7%)
Vacant Housing Units 699 ( 9.1%)
Median Home Value $116,322
Average Home Value $142,486


Median Household Income $57,057
Average Household Income $69,909
Per Capita Income $28,456
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.49% 0.38%
Households 0.47% 0.37%
Families 0.33% 0.27%
Median Household Income   1.11%
Per Capita Income   1.45%
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.


Piatt County IL - Peer Comparisons by Rank and Percentile

The table below compares Piatt 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 # 65 37th
Population Density1 # 64 38th
Diversity Index2 # 92 12th
Median Household Income # 14 87th
Per Capita Income # 17 84th

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