Illinois Gazetteer
Also See Rock Island, IL: ZIP Codes & Maps
The City of Rock Island had a population of 36,151 as of 2020-2024 American Community Survey 5-Year Estimates. 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 41.5095 and longitude -90.5788 in Rock Island County. The formal boundaries for the City of Rock Island 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 City of Rock Island 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 Rock Island, a minor civil division (MCD) of Rock Island County.
Source: 2020-2024 American Community Survey 5-Year Estimates
POPULATION | |
|---|---|
| Total Population | 36,151 (100%) |
| Population Density | 2,062 per sq mi |
| Diversity Index1 | 56 |
INCOME | |
| Median Household Income | $59,041 |
| Per Capita Income | $34,053 |
| Median Home Value | $125,900 |
HOUSING | |
|---|---|
| Total HU (Housing Units) | 16,533 (100%) |
| Owner Occupied HU | 9,912 (60.0%) |
| Renter Occupied HU | 5,373 (32.5%) |
| Vacant Housing Units | 1,248 (7.5%) |
HOUSEHOLDS | |
| Total Households | 15,285 |
| Average Household Size | 2.16 |
| Family Households | 7,973 (52.2%) |
The table below compares Rock Island to the other 1,461 incorporated cities, towns and CDPs in Illinois by rank and percentile using 2020-2024 American Community Survey 5-Year Estimates 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 | # 51 | 97th |
| Population Density | # 245 | 83rd |
| Median Household Income | # 1013 | 31st |
| Per Capita Income | # 742 | 49th |
| Diversity Index | # 103 | 93rd |
Additional comparisons and rankings can be made with a VERY EASY TO USE Illinois Census Data Comparison Tool.
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