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.

Demographics

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

Population by Race

Race	Population	Percentage (of total)
White	365	98.38%
Native American	6	1.62%

Rock Island Marital Status

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