Willowbrook, IL Profile: Facts & Data


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Willowbrook, Illinois - Basic Facts

The Village of Willowbrook had a population of 8,311 as of July 1, 2020. Willowbrook ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Illinois. See peer rankings below.

The primary coordinate point for Willowbrook is located at latitude 41.7698 and longitude -87.9359 in DuPage County. The formal boundaries for the Village of Willowbrook encompass a land area of 2.69 sq. miles and a water area of 0.05 sq. miles. DuPage County is in the Central time zone (GMT -6). The elevation is 732 feet.

The Village of Willowbrook (GNIS ID: 2399702) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

The Village of Willowbrook is located within Township of Downers Grove, a minor civil division (MCD) of DuPage County.


Willowbrook, IL Data & Demographics (As of July 1, 2020)


Total Population 8,311 (100%)
Population in Households 8,163 (98.2%)
Population in Families 6,159 (74.1%)
Population in Group Quarters1 148 ( 1.8%)
Population Density 3,090
Diversity Index2 53


Median Household Income $74,319
Average Household Income $114,430
% of Income for Mortgage4 17%
Per Capita Income $52,122
Wealth Index5 166


Total HU (Housing Units) 4,321 (100%)
Owner Occupied HU 2,721 (63.0%)
Renter Occupied HU 1,234 (28.6%)
Vacant Housing Units 366 ( 8.5%)
Median Home Value $297,000
Average Home Value $384,809
Housing Affordability Index3 147


Total Households 3,955
Average Household Size 2.06
Family Households 2,175
Average Family Size 3
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. 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 races 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.
  3. 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.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. 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.


2010-2020 2020-2025
Population -0.07% -0.16%
Households -0.03% -0.15%
Families 0.36% -0.25%
Median Household Income   0.86%
Per Capita Income   1.32%
Owner Occupied HU   -0.19%


Willowbrook, IL - Peer Comparisons by Rank and Percentile

The table below compares Willowbrook to the other 1,369 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2020 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 # 252 82nd
Population Density # 131 91st
Median Household Income # 307 78th
Housing Affordability Index # 213 16th
Per Capita Income # 72 95th
Diversity Index # 176 87th

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

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