South Rock Island Flag

South Rock Island

County Seat:
No
Area (mi²):
6.894
State:
Illinois

South Rock Island is located in Rock Island County, Illinois. South Rock Island has a 2025 population of 17,806. South Rock Island is currently declining at a rate of -0.4% annually and its population has decreased by -3.27% since the most recent census, which recorded a population of 18,408 in 2020.

The average household income in South Rock Island is $82,810 with a poverty rate of 13.89%. The median age in South Rock Island is 42.8 years: 40.9 years for males, and 46.4 years for females.

17.8K
Total Population
2,583
Density (mi²)
-71 -0.4%
Growth

South Rock Island Population

South Rock Island Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of South Rock Island includes 77.48% White, 10.36% Black or African American, 3.63% Asian, and smaller percentages for other race, Native American and multiracial populations.

Population by Race

White (77.5%)

Black or African American (10.4%)

Two or more races (6.2%)

Asian (3.6%)

Other race (2.3%)

Native American (0.1%)

Race
Population
Percentage (of total)
White14,10377.48%
Black or African American1,88610.36%
Two or more races1,1246.18%
Asian6603.63%
Other race4092.25%
Native American190.1%

South Rock Island Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

South Rock Island's average per capita income is $47,719. Household income levels show a median of $66,789. The poverty rate stands at 13.89%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$100,029-
Families$84,006$111,090
Households$66,789$82,810
Non Families$40,564$50,415

$47,719

Average Income

$66,789

Median Household Income

13.89%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)