Rock Island Flag

Rock Island

County Seat:
Yes
Area (mi²):
4.776
State:
Illinois

Rock Island is located in Rock Island County, Illinois. Rock Island has a 2025 population of 15,840 . It is also the county seat of Rock Island County . Rock Island is currently growing at a rate of 0.34% annually but its population has decreased by -1.17% since the most recent census, which recorded a population of 16,028 in 2020.

The average household income in Rock Island is $58,739 with a poverty rate of 30.33%. The median age in Rock Island is 28 years: 28.7 years for males, and 26.9 years for females. For every 100 females there are 104.0 males.

15.8K
Total Population
3,317
Density (mi²)
54 0.34%
Growth

Rock Island Population

Rock Island Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Rock Island includes 55.58% White, 24.08% Black or African American, 6.38% other race, 3.43% Asian, and smaller percentages for Native Hawaiian or Pacific Islander, Native American and multiracial populations.

Population by Race

White (55.58%)

Black or African American (24.08%)

Two or more races (8.98%)

Other race (6.38%)

Asian (3.43%)

Native Hawaiian or Pacific Islander (1.01%)

Native American (0.53%)

Race
Population
Percentage (of total)
White8,83555.58%
Black or African American3,82824.08%
Two or more races1,4288.98%
Other race1,0146.38%
Asian5463.43%
Native Hawaiian or Pacific Islander1611.01%
Native American850.53%

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

Rock Island's average per capita income is $39,090. Household income levels show a median of $40,783. The poverty rate stands at 30.33%.

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$81,117-
Families$54,511$69,982
Households$40,783$58,739
Non Families$33,090$45,644

$39,090

Average Income

$40,783

Median Household Income

30.33%

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)