Rock Island, IL Profile: Facts, Map & Data

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Rock Island, Illinois - Basic Facts

The City of Rock Island had a population of 38,875 as of July 1, 2016. Rock Island 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 Rock Island is located at latitude 41.4702 and longitude -90.5831 in Rock Island County. The formal boundaries for the City of Rock Island (see map below) encompass a land area of 16.83 sq. miles and a water area of 0.2 sq. miles. Rock Island County is in the Central time zone (GMT -6). The elevation is 561 feet.

The City of Rock Island (GNIS ID: 2396400) 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 Rock Island is located within Township of South Rock Island, a minor civil division (MCD) of Rock Island County.

Beneath the boundary map are tables with Rock Island population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2016.

Alternate Unofficial Names for Rock Island: Quad Cities, Stephenson.


Neighborhood Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting certain data.

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City of Rock Island, IL Boundary Map



Also See: BIG Map | Driving Directions | IL Congressional Districts
Boundary Maps: Township of South Rock Island | Rock Island County | Illinois Counties

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Rock Island, IL Data & Demographics (As of July 1, 2016)

POPULATION

Total Population 38,875
Population in Households 36,435
Population in Familes 27,004
Population in Group Qrtrs 2,440
Population Density1 2,310
Diversity Index2 58
 

HOUSEHOLDS

Total Households 15,885
Average Household Size 2.29
Family Households 9,055
Average Family Size 3

HOUSING

Total Housing Units 17,689 (100%)
Owner Occupied HU 9,874 (55.8%)
Renter Occupied HU 6,011 (34.0%)
Vacant Housing Units 1,804 (10.2%)
Median Home Value $95,198
Average Home Value $120,334
 

INCOME

Median Household Income $39,989
Average Household Income $56,259
Per Capita Income $24,004
  (Compound Annual Growth Rates)

GROWTH RATES

2010-2015 2015-2020
Population -0.06% -0.07%
Households -0.05% -0.06%
Families -0.27% -0.2%
Median Household Income   -1.92%
Per Capita Income   0.88%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood 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.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

Rock Island, IL - Peer Comparisons by Rank and Percentile

The table below compares Rock Island to the other 1,368 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2016 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 # 46 97th
Population Density1 # 209 85th
Diversity Index2 # 127 91st
Median Household Income # 1134 17th
Per Capita Income # 870 36th

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