Williamson County IL Information

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Williamson County Subdivisions

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  1. Williamson County 2019 Demographic Data
  2. Growth Rates forWilliamson County (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Illinois Research Tools (Easy Tools & Current Data)
  3. Illinois Data Comparison Tool - 2019 Demographics

Williamson County IL Data & Demographics (As of July 1, 2019)

HOUSING AFFORDABILITY INDEX

Williamson County IL Housing Affordability Index is 178
State of Illinois Housing Affordability Index is 119
The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.

WEALTH INDEX

Williamson County IL Wealth Index is 65
State of Illinois Wealth Index is 105
The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.

These new demographic attributes are availiable for Neighborhoods, Cities, Counties, and ZIP Codes.

More Tools and Resources:

  1. For information about schools and school attendance zones, use the HTL Address Tool
  2. Our new HTL Neighborhood Explorer provides lots of detail about any neighborhood.
  3. The new 2-Minute Introduction and Concise Guide to Big Data which will help you make the most effective use of HomeTownLocator Tools.
  4. See the References & Data Sources page for more information about methodology and sources of data.

POPULATION

Total Population 68,558
Population in Households 66,365
Population in Familes 52,778
Population in Group Qrtrs 2,193
Population Density 163
Diversity Index1 22
 

INCOME

Median Household Income $51,373
Average Household Income $65,595
Per Capita Income $27,093
Wealth Index3 65

HOUSING

Total Housing Units 31,650 (100%)
Owner Occupied HU 19,098 (60.3%)
Renter Occupied HU 9,162 (28.9%)
Vacant Housing Units 3,390 (10.7%)
Median Home Value $126,644
Housing Affordability Index2 178
 

HOUSEHOLDS

Total Households 28,260
Average Household Size 2.35
Family Households 18,248
Average Family Size 3
NOTES
  1. 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.
  2. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  3. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.

GROWTH RATE / YEAR

2010-2019 2019-2024
Population 0.35% 0.27%
Households 0.33% 0.29%
Families 0.15% 0.17%
Median Household Income   1.57%
Per Capita Income   2.29%

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Williamson County IL - Peer Comparisons by Rank and Percentile

The table below compares Williamson County to the other 102 counties and county equivalents in Illinois by rank and percentile using July 1, 2019 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 # 22 79th
Population Density # 20 81st
Diversity Index # 49 53rd
Median Household Income # 60 42nd
Per Capita Income # 57 45th

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

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