Naperville, IL Profile: Facts & Data

The City of Naperville is the 4th largest city in Illinois with a population of 148,402 as of July 1, 2024. 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 41.7859 and longitude -88.1473 in DuPage County. The formal boundaries for the City of Naperville 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).

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 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.

Naperville, IL Data & Demographics (As of July 1, 2024)

POPULATION
Total Population	148,402 (100%)
Population in Households	145,581 (98.1%)
Population in Families	127,915 (86.2%)
Population in Group Quarters¹	2,821 ( 1.9%)
Population Density	3,790
Diversity Index²	62


INCOME
Median Household Income	$147,387
Average Household Income	$191,370
% of Income for Mortgage⁴	21%
Per Capita Income	$69,187
Wealth Index⁵	189
Socioeconomic Status Index⁶	Moderate (62.5)

HOUSING
Total HU (Housing Units)	56,126 (100%)
Owner Occupied HU	40,845 (72.8%)
Renter Occupied HU	12,781 (22.8%)
Vacant Housing Units	2,500 ( 4.5%)
Median Home Value	$481,466
Average Home Value	$528,882
Housing Affordability Index³	103

HOUSEHOLDS
Total Households	53,626
Average Household Size	2.71
Family Households	40,258
Average Family Size	3.00

NOTES

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.
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.
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.
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).
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.
The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

Naperville, IL - Peer Comparisons by Rank and Percentile

The table below compares Naperville to the other 1,462 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2024 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.

GROWTH RATE / YEAR	2020-2024	2024-2029
Population	-0.18%	-0.42%
Households	0.18%	0.13%
Families		0.02%
Median Household Income		1.61%
Per Capita Income		2.62%
Owner Occupied HU		0.41%

Variable Description	Rank	Percentile
Total Population	# 4	100th
Population Density	# 93	94th
Median Household Income	# 46	97th
Housing Affordability Index	# 377	26th
Per Capita Income	# 54	96th
Diversity Index	# 182	88th

Naperville, IL Profile: Facts & Data

Naperville, Illinois - Basic Facts

Naperville, IL Data & Demographics (As of July 1, 2024)

POPULATION

INCOME

HOUSING

HOUSEHOLDS

GROWTH RATE / YEAR

Naperville, IL - Peer Comparisons by Rank and Percentile

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