ZIP codes
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Rock Island, TX Demographics & ZIP Codes
Rock Island, Texas demographics and median household income by ZIP code (in Colorado County) — 1 ZIP codes — population 381 — median income $38,977. Compare income, housing, and population across ZIP codes on US5.
Population
381
Median household income (avg.)
$38,977
52% of U.S. median
Average home value
—
Median age (avg.)
40.0
Rock Island demographics
Rock Island, Texas covers 1 ZIP code primarily in Colorado County, with a combined ZIP-area population of about 381.
Across ZIP codes with age data, the average median age is about 40.0 years.
Median household income in Rock Island
The average median household income across ZIP codes in Rock Island, Texas is about $38,977 — about 47% below the TX ZIP average ($73,553), and about 48% below the U.S. median ($75,149).
The highest median household income among listed ZIPs is about $38,977 in 77470.
Housing in Rock Island
The most populous ZIP in this set is 77470 (about 381 residents). Use the table below to compare population, income, and home values across codes.
ZIP codes in Rock Island
Sort by population, income, or home value. Click a column header to toggle ascending / descending.
| ZIP | City | County | State | Population ↓ | Income | Home value |
|---|---|---|---|---|---|---|
| 77470 | Rock Island | Colorado County | TX | 381 | $38,977 | — |
Frequently asked questions
What are the demographics of Rock Island?
Rock Island, Texas has a combined ZIP-area population of about 381 across 1 ZIP codes (primarily Colorado County). Browse the ZIP table below for population, income, and housing by code.
What is the median household income in Rock Island?
The average median household income across ZIP codes in Rock Island, Texas is about $38,977, about 47% below the state ZIP average ($73,553), and about 48% below the U.S. median ($75,149).
How many ZIP codes are in Rock Island?
Rock Island, Texas includes 1 ZIP codes on US5. Each row links to demographics, median income, and housing for that code.
Where can I find ZIP code demographics for Rock Island?
This page lists ZIP codes in Rock Island, Texas with population, median household income, and home value. Select a ZIP for a full demographics profile.