Rock Island, Colorado County
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| City | Rock Island |
| State | Texas (TX) |
| County | Colorado |
| Country | United States of America |
| Timezone | Central Time (America/Chicago) |
| Latitude | 29.531074 |
| Longitude | -96.57525 |
| Population | 414 |
| Density | 28.6 /km² |
| Incorporated | N/A |
| ZIP Code(s) | 75630, 77575, 77445, 77470 |
| Area Code | 281 |
| County Seat | Columbus |
| School District | Columbus Independent School District |
Rock Island is a locality in Colorado County, Texas, United States. It is a small community with a population of 414. The population density is 28.6 people per km². Rock Island is located at 29.5311°N, 96.5752°W. It observes the Central Time (America/Chicago) timezone. ZIP code: 77470.
Rock Island rests gently on the flat, fertile plains of South Texas, a landscape defined by the slow, wide curve of the San Bernard River. It lies 42.0 miles west-south-west of Fulshear, TX (from Fulshear, TX: bearing 255°T), and is situated 12.3 miles south of Columbus. The land here is a broad, unbroken expanse, where the sky feels immense and the horizon stretches endlessly, broken only by scattered stands of live oaks and mesquite trees. The air, especially in the late afternoon, carries a humid warmth, thick with the scent of damp earth and the faint, sweet perfume of unseen wildflowers. Evenings often bring a palpable stillness, a quietude that settles over the fields like a soft blanket, broken only by the chirping of insects and the distant lowing of cattle. This pocket of Colorado County, Rock Island, owes its character to the rich alluvial soil deposited by the river over millennia, a gift that has shaped its destiny from early settlement. Historically, agriculture has been the lifeblood, with cotton and cattle ranching forming the backbone of its economy for generations, a tradition that continues to echo in the rhythm of the seasons. The community itself is a testament to this enduring connection to the land, a place where life moves at a pace dictated by the sun and the soil, fostering a deep sense of continuity. While modern conveniences have arrived, the spirit of Rock Island remains rooted in its agrarian past, a quiet persistence in the face of change.
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This page provides an embedded street and satellite map of Rock Island, Texas — switch between views using the small square in the bottom left-hand corner of the map. Coordinates: 29.531074, -96.57525. Live weather conditions are sourced directly from the National Weather Service, with current observations and a 7-day forecast also powered by Open-Meteo. Real-time local news and world news feeds keep the page current, while a Wikipedia summary or an editorially written description provides background on Rock Island and Colorado County.
Detailed location data for Rock Island includes the ZIP code (75630), telephone area code (281), county seat of Colorado County (Columbus), and school district assignment (Columbus Independent School District). These are among the most commonly searched location details for any US city or town.
Location data is drawn from the USGS Geographic Names Information System (GNIS) and cross-verified against 2020 US Census records by coordinate proximity — ensuring the correct Rock Island is identified even where the name is shared across multiple counties or states. Population figures are sourced from the 2020 US Census.
| Page generated | July 2026 |
| Location data | SimpleMaps US Cities Database; coordinates matched to USGS GNIS definitive data |
| Wikipedia validation | Article content matched to USGS GNIS coordinates via Wikipedia geosearch API. Location verified by proximity — not name matching alone. |