Aurora, IL Profile: Facts, Map & Data


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Aurora, Illinois - Basic Facts

The City of Aurora is the 2nd largest city in Illinois with a population of 203,195 as of July 1, 2017. Aurora 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 Aurora is located at latitude 41.7635 and longitude -88.2901 in Kane County. The formal boundaries for the City of Aurora (see map below) encompass a land area of 44.88 sq. miles and a water area of 0.89 sq. miles. Kane County is in the Central time zone (GMT -6). The elevation is 679 feet.

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

The City of Aurora (GNIS ID: 2394031) 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 Aurora is located within Township of Aurora, a minor civil division (MCD) of Kane County.

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

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City of Aurora, IL Boundary Map

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Boundary Maps: Township of Aurora | Kane County | Illinois Counties

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


Total Population 203,195
Daytime Population: Workers 71,111
Daytime Population: Residents 103,200
Total Daytime Population (TDP) 174,311
Ratio TDP/Total Population1 0.86
Population in Households 201,009
Population in Familes 172,226
Population in Group Qrtrs 2,186
Population Density2 4,528
Diversity Index3 82


Median Household Income $65,373
Average Household Income $87,942
Per Capita Income $27,975


Total Housing Units 68,343 (100%)
Owner Occupied HU 42,523 (62.2%)
Renter Occupied HU 21,094 (30.9%)
Vacant Housing Units 4,726 ( 6.9%)
Median Home Value $192,413
Average Home Value $222,759


Total Households 63,617
Average Household Size 3.16
Family Households 46,616
Average Family Size 4
  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 0.36% 0.32%
Households 0.22% 0.27%
Families 0.06% 0.15%
Median Household Income   2.31%
Per Capita Income   2.38%

Aurora, IL - Peer Comparisons by Rank and Percentile

The table below compares Aurora 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 # 2 100th
Population Density # 60 96th
Diversity Index # 13 99th
Median Household Income # 317 77th
Per Capita Income # 575 58th

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

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