Rock Island Arsenal Flag

Rock Island Arsenal

County Seat:
No
Area (mi²):
1.572
State:
Illinois

Rock Island Arsenal is a CDP located in Rock Island County, Illinois. Rock Island Arsenal has a 2025 population of 431 . Rock Island Arsenal is currently growing at a rate of 4.36% annually and its population has increased by 22.1% since the most recent census, which recorded a population of 353 in 2020.

The average household income in Rock Island Arsenal is $63,041 with a poverty rate of 0%. The median age in Rock Island Arsenal is 43.1 years: 46.3 years for males, and 27.2 years for females. For every 100 females there are 120.1 males.

431
Total Population
274
Density (mi²)
18 4.36%
Growth

Rock Island Arsenal Population

Rock Island Arsenal Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Rock Island Arsenal includes 22.04% White, 9.95% other race, and smaller percentages for Black or African American and multiracial populations.

Population by Race

Two or more races (67.2%)

White (22.04%)

Other race (9.95%)

Black or African American (0.81%)

Race
Population
Percentage (of total)
Two or more races25067.2%
White8222.04%
Other race379.95%
Black or African American30.81%

Rock Island Arsenal 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 Arsenal's average per capita income is $14,500. Household income levels show a median of $53,472. The poverty rate stands at 0%.

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
Households$53,472$63,041
Families$53,472$63,041
Married Families$53,472-
Non Families--

$14,500

Average Income

$53,472

Median Household Income

0%

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)