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

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