Rockford, IL Profile: Facts, Map & Data


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Rockford, Illinois - Basic Facts

The City of Rockford is the 4th largest city in Illinois with a population of 150,027 as of July 1, 2017. Rockford 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 Rockford is located at latitude 42.2588 and longitude -89.0646 in Winnebago County. The formal boundaries for the City of Rockford (see map below) encompass a land area of 63.35 sq. miles and a water area of 1.01 sq. miles. Winnebago County is in the Central time zone (GMT -6). The elevation is 718 feet.

The City of Rockford (GNIS ID: 2396405) 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 Rockford is located within Township of Rockford, a minor civil division (MCD) of Winnebago County.

Beneath the boundary map are tables with Rockford 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 Rockford: The Forest City.

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City of Rockford, IL Boundary Map

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

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


Total Population 150,027
Daytime Population: Workers 94,115
Daytime Population: Residents 85,501
Total Daytime Population (TDP) 179,616
Ratio TDP/Total Population1 1.20
Population in Households 146,061
Population in Familes 113,228
Population in Group Qrtrs 3,966
Population Density2 2,368
Diversity Index3 69


Median Household Income $39,882
Average Household Income $58,539
Per Capita Income $23,872


Total Housing Units 66,846 (100%)
Owner Occupied HU 33,045 (49.4%)
Renter Occupied HU 26,028 (38.9%)
Vacant Housing Units 7,773 (11.6%)
Median Home Value $101,830
Average Home Value $124,691


Total Households 59,073
Average Household Size 2.47
Family Households 36,004
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 -0.26% -0.46%
Households -0.19% -0.4%
Families -0.39% -0.56%
Median Household Income   0.12%
Per Capita Income   2.01%

Rockford, IL - Peer Comparisons by Rank and Percentile

The table below compares Rockford 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 # 4 100th
Population Density # 199 86th
Diversity Index # 60 96th
Median Household Income # 1181 14th
Per Capita Income # 968 29th

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

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