Rock Island Flag

Rock Island

County:
Colorado County
County Seat:
No
Area (mi²):
5.016
State:
Texas

Rock Island is a CDP located in Colorado County, Texas. Rock Island has a 2025 population of 492. Rock Island is currently growing at a rate of 6.96% annually and its population has increased by 10.07% since the most recent census, which recorded a population of 447 in 2020.

The average household income in Rock Island is $35,511 with a poverty rate of 22.64%.The median age in Rock Island is 39.8 years: 42.5 years for males, and 36.4 years for females.

492
Total Population
98
Density (mi²)
32 6.96%
Growth

Rock Island Population

Rock Island Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Rock Island includes 98.38% White, and smaller percentages for Native American and multiracial populations.

Population by Race

White (98.4%)

Native American (1.6%)

Race
Population
Percentage (of total)
White36598.38%
Native American61.62%

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 $36,633. Household income levels show a median of $38,409. The poverty rate stands at 22.64%.

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$49,158-
Families$47,908$40,707
Households$38,409$35,511
Non Families$13,750-

$36,633

Average Income

$38,409

Median Household Income

22.64%

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)