Westmont, IL Profile: Facts, Map & Data


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Westmont, Illinois - Basic Facts

The Village of Westmont had a population of 25,021 as of July 1, 2017. Westmont 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 Westmont is located at latitude 41.7944 and longitude -87.9729 in DuPage County. The formal boundaries for the Village of Westmont (see map below) encompass a land area of 5.01 sq. miles and a water area of 0.11 sq. miles. DuPage County is in the Central time zone (GMT -6). The elevation is 748 feet.

The Village of Westmont (GNIS ID: 2400153) 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 Westmont is located within Township of Downers Grove, a minor civil division (MCD) of DuPage County.

Beneath the boundary map are tables with Westmont population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

Alternate Unofficial Names for Westmont: Gregg.

Neighborhood Data

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Village of Westmont, IL Boundary Map

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Westmont, IL Data & Demographics (As of July 1, 2017)


Total Population 25,021
Daytime Population: Workers 12,792
Daytime Population: Residents 12,818
Total Daytime Population (TDP) 25,610
Ratio TDP/Total Population1 1.02
Population in Households 24,579
Population in Familes 18,844
Population in Group Qrtrs 442
Population Density2 4,995
Diversity Index3 59


Median Household Income $61,377
Average Household Income $89,818
Per Capita Income $38,396


Total Housing Units 11,303 (100%)
Owner Occupied HU 5,465 (48.3%)
Renter Occupied HU 5,014 (44.4%)
Vacant Housing Units 824 ( 7.3%)
Median Home Value $300,462
Average Home Value $381,093


Total Households 10,479
Average Household Size 2.35
Family Households 6,079
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  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.


2010-2017 2017-2022
Population 0.18% 0.22%
Households 0.16% 0.21%
Families -0.1% 0.08%
Median Household Income   2.05%
Per Capita Income   2.54%

Westmont, IL - Peer Comparisons by Rank and Percentile

The table below compares Westmont to the other 1,368 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2017 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 # 95 93rd
Population Density # 44 97th
Diversity Index # 122 91st
Median Household Income # 402 71st
Per Capita Income # 154 89th

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

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