South Rock Island township

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

South Rock Island township is located in Rock Island County, Illinois. South Rock Island township has a 2025 population of 17,806. South Rock Island township 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 township is $82,810 with a poverty rate of 13.89%. The median age in South Rock Island township is 42.8 years: 40.9 years for males, and 46.4 years for females.

Demographics

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

Population by Race

White

Black or African American

Two or more races

Asian

Other race

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	14,103	77.48%
Black or African American	1,886	10.36%
Two or more races	1,124	6.18%
Asian	660	3.63%
Other race	409	2.25%
Native American	19	0.1%
Native Hawaiian or Pacific Islander	0	0%

South Rock Island township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

South Rock Island township'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