Springfield, IL Profile: Facts, Map & Data


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Springfield, Illinois - Basic Facts

The City of Springfield is the 8th largest city in Illinois with a population of 115,754 as of July 1, 2017. Springfield 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 Springfield is located at latitude 39.7911 and longitude -89.6446 in Sangamon County. The formal boundaries for the City of Springfield (see map below) encompass a land area of 59.63 sq. miles and a water area of 6.28 sq. miles. Sangamon County is in the Central time zone (GMT -6). The elevation is 600 feet.

The City of Springfield (GNIS ID: 2395940) 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 Springfield is located within Township of Capital, a minor civil division (MCD) of Sangamon County.

Beneath the boundary map are tables with Springfield 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 Springfield, IL Boundary Map

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Boundary Maps: Township of Capital | Sangamon County | Illinois Counties

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


Total Population 115,754
Daytime Population: Workers 102,980
Daytime Population: Residents 57,764
Total Daytime Population (TDP) 160,744
Ratio TDP/Total Population1 1.39
Population in Households 112,393
Population in Familes 81,959
Population in Group Qrtrs 3,361
Population Density2 1,941
Diversity Index3 45


Median Household Income $49,313
Average Household Income $70,124
Per Capita Income $31,472


Total Housing Units 56,441 (100%)
Owner Occupied HU 30,701 (54.4%)
Renter Occupied HU 19,941 (35.3%)
Vacant Housing Units 5,799 (10.3%)
Median Home Value $115,550
Average Home Value $148,292


Total Households 50,642
Average Household Size 2.22
Family Households 27,886
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 -0.01% 0.06%
Households 0.02% 0.07%
Families -0.24% -0.1%
Median Household Income   0.55%
Per Capita Income   1.98%

Springfield, IL - Peer Comparisons by Rank and Percentile

The table below compares Springfield 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 # 8 99th
Population Density # 289 79th
Diversity Index # 218 84th
Median Household Income # 871 36th
Per Capita Income # 350 74th

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

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