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 2026 population of 457. Rock Island is currently growing at a rate of 6.78% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

The median household income in Rock Island is $43,149 with a poverty rate of 8.94%. The median age in Rock Island is 49.2 years: 42.8 years for males, and 49.4 years for females. For every 100 females there are 185.5 males.

457
Total Population
91
Density (mi²)
29 6.78%
Growth

Rock Island Population

Rock Island Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026457296.78%
2025428287%

Median Age

Overall: 49.2 years
Female: 49.4 years
Male: 42.8 years

Rock Island Adults

There are 318 adults, (94 of whom are seniors) in Rock Island.

Sex Ratio

Female: 145 (35%)
Male: 269 (65%)

Demographics

The racial composition of Rock Island includes 98.31% White, and smaller percentages for Native American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White40798.31%
Native American71.69%
Race
Population ↓
Percentage (of total)
White51.21%
Race
Population ↓
Percentage (of total)
White40297.1%
Native American71.69%

Rock Island Marital Status

Economics and Income Statistics

Rock Island 's average per capita income is $35,099. Household income levels show a median of $43,149. The poverty rate stands at 8.94%.

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$44,832-
Families$44,207$48,707
Households$43,149$40,314
Non Families$13,707-

$35,099

Average Income

$43,149

Median Household Income

8.94%

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)