Rock Island

County:: Rock Island County
County Seat:: Yes
Area (mi²):: 16.871
State:: Illinois

Rock Island is a city located in Rock Island County, Illinois. Rock Island has a 2025 population of 35,540. It is also the county seat of Rock Island County. Rock Island is currently declining at a rate of -0.83% annually and its population has decreased by -4% since the most recent census, which recorded a population of 37,019 in 2020.

The average household income in Rock Island is $75,802 with a poverty rate of 20.95%. The median age in Rock Island is 37.1 years: 35.3 years for males, and 37.6 years for females.

Demographics

The racial composition of Rock Island includes 68.02% White, 16.43% Black or African American, 3.79% other race, 3.39% Asian, and smaller percentages for Native Hawaiian or Pacific Islander, Native American and multiracial populations.

Population by Race

White

Black or African American

Two or more races

Other race

Asian

Native Hawaiian or Pacific Islander

Native American

Race	Population	Percentage (of total)
White	25,003	68.02%
Black or African American	6,038	16.43%
Two or more races	2,804	7.63%
Other race	1,392	3.79%
Asian	1,247	3.39%
Native Hawaiian or Pacific Islander	161	0.44%
Native American	113	0.31%

Rock Island Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Rock Island's average per capita income is $43,653. Household income levels show a median of $57,292. The poverty rate stands at 20.95%.

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	$92,420	-
Families	$78,234	$98,274
Households	$57,292	$75,802
Non Families	$37,673	$49,123

$43,653

Average Income

$57,292

Median Household Income

20.95%

Poverty Rate