Naperville, IL Profile: Facts, Map & Data


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Naperville, Illinois - Basic Facts

The City of Naperville is the 5th largest city in Illinois with a population of 145,798 as of July 1, 2017. Naperville 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 Naperville is located at latitude 41.7492 and longitude -88.162 in DuPage County. The formal boundaries for the City of Naperville (see map below) encompass a land area of 38.64 sq. miles and a water area of 0.56 sq. miles. DuPage County is in the Central time zone (GMT -6). The elevation is 709 feet.

While the primary coordinates for City of Naperville are located in DuPage County, it should be noted that the formal boundaries for this community also extend into and Will County.

The City of Naperville (GNIS ID: 2395147) 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 City of Naperville is located within Township of Naperville, a minor civil division (MCD) of DuPage County.

Beneath the boundary map are tables with Naperville 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 Naperville: Fort Naper, Naper Settlement, Napiersville, Napierville.

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City of Naperville, IL Boundary Map

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Boundary Maps: Township of Naperville | DuPage County | Illinois Counties

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


Total Population 145,798
Daytime Population: Workers 82,692
Daytime Population: Residents 69,257
Total Daytime Population (TDP) 151,949
Ratio TDP/Total Population1 1.04
Population in Households 143,216
Population in Familes 126,167
Population in Group Qrtrs 2,582
Population Density2 3,774
Diversity Index3 50


Median Household Income $113,890
Average Household Income $147,181
Per Capita Income $52,599


Total Housing Units 53,612 (100%)
Owner Occupied HU 38,360 (71.6%)
Renter Occupied HU 12,963 (24.2%)
Vacant Housing Units 2,289 ( 4.3%)
Median Home Value $394,679
Average Home Value $435,248


Total Households 51,323
Average Household Size 2.79
Family Households 38,290
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 0.43% 0.42%
Households 0.4% 0.39%
Families 0.33% 0.34%
Median Household Income   1.38%
Per Capita Income   2.04%

Naperville, IL - Peer Comparisons by Rank and Percentile

The table below compares Naperville 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 # 5 100th
Population Density # 97 93rd
Diversity Index # 182 87th
Median Household Income # 40 97th
Per Capita Income # 46 97th

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

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