Winnebago County IL Information


Winnebago County Subdivisions

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  1. Winnebago County 2018 Demographic Data
  2. Growth Rates forWinnebago 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 - 2018 Demographics

Winnebago County IL Data & Demographics (As of July 1, 2018)


Total Population 289,766
Population in Households 285,050
Population in Familes 230,318
Population in Group Qrtrs 4,716
Population Density2 564
Diversity Index3 56


Median Household Income $50,574
Average Household Income $68,621
Per Capita Income $27,669


Total Housing Units 125,965 (100%)
Owner Occupied HU 73,407 (58.3%)
Renter Occupied HU 41,343 (32.8%)
Vacant Housing Units 11,215 ( 8.9%)
Median Home Value $128,811
Average Home Value $149,603


Total Households 114,750
Average Household Size 2.48
Family Households 75,264
Average Family Size 3
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  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.


2010-2018 2018-2023
Population -0.23% -0.33%
Households -0.08% -0.25%
Families -0.25% -0.37%
Median Household Income   1.15%
Per Capita Income   2.33%


Winnebago County IL - Peer Comparisons by Rank and Percentile

The table below compares Winnebago County to the other 102 counties and county equivalents in Illinois by rank and percentile using July 1, 2018 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 # 7 94th
Population Density # 6 95th
Diversity Index # 6 95th
Median Household Income # 51 51st
Per Capita Income # 44 58th

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

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Illinois Census Data Comparison Tool

Compare Illinois July 1, 2018 Data
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