South Beloit, IL Profile: Facts, Map & Data


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South Beloit, Illinois - Basic Facts

The City of South Beloit had a population of 7,850 as of July 1, 2017. South Beloit ranks in the upper quartile for 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 South Beloit is located at latitude 42.4848 and longitude -89.0274 in Winnebago County. The formal boundaries for the City of South Beloit (see map below) encompass a land area of 5.9 sq. miles and a water area of 0.23 sq. miles. Winnebago County is in the Central time zone (GMT -6). The elevation is 738 feet.

The City of South Beloit (GNIS ID: 2395912) 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 South Beloit is located within Township of Roscoe, a minor civil division (MCD) of Winnebago County.

Beneath the boundary map are tables with South Beloit 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 South Beloit, IL Boundary Map

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Boundary Maps: Township of Roscoe | Winnebago County | Illinois Counties

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


Total Population 7,850
Daytime Population: Workers 3,207
Daytime Population: Residents 4,077
Total Daytime Population (TDP) 7,284
Ratio TDP/Total Population1 0.93
Population in Households 7,782
Population in Familes 6,422
Population in Group Qrtrs 68
Population Density2 1,331
Diversity Index3 40


Median Household Income $50,300
Average Household Income $62,825
Per Capita Income $24,080


Total Housing Units 3,391 (100%)
Owner Occupied HU 2,112 (62.3%)
Renter Occupied HU 873 (25.7%)
Vacant Housing Units 405 (11.9%)
Median Home Value $121,324
Average Home Value $125,544


Total Households 2,986
Average Household Size 2.61
Family Households 2,060
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 -0.07% -0.43%
Households -0.1% -0.41%
Families -0.05% -0.54%
Median Household Income   0.4%
Per Capita Income   2.39%

South Beloit, IL - Peer Comparisons by Rank and Percentile

The table below compares South Beloit 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 # 262 81st
Population Density # 558 59th
Diversity Index # 250 82nd
Median Household Income # 822 40th
Per Capita Income # 952 30th

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

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