Rock Island, TX ZIP code
The ZIP code for Rock Island, Texas is 77470. It is in Colorado County.
- Population in these ZIPs
- 414
- Avg. median income
- $43,100population-weighted
- Typical home value
- $122,800population-weighted
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Rock Island, TX ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 77470 | 414 | $43,149 | $122,800 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Rock Island
Frequently asked questions
What is the ZIP code for Rock Island, TX?
The ZIP code for Rock Island, TX is 77470.
What county is Rock Island, Texas in?
Rock Island ZIP codes are in Colorado County.