THE ROCK ISLAND LAND BRIEF
Land in the
Northern Humid Gulf Coastal Prairies setting.
Rock Island CDP has 5.02 square miles of land in Colorado County. Its Census reference point is in Northern Humid Gulf Coastal Prairies, within Western Gulf Coastal Plain.
Low coastal plains extend along the western Gulf, contrasting with more irregular inland country. Grassland was the principal natural cover, with river corridors and coastal features adding local variation.
Regional context: Western Gulf Coastal Plain ↗ · Classification at the Census reference point
Rock Island and Colorado County
Rock Island is associated with Colorado County in the Census boundary data. Start with the parcel’s tax bill to match the property to that jurisdiction, then confirm which government handles its land use.
Rock Island by land and water
The Census records 0.04 square miles of water within Rock Island, or 0.7% of its total area. It is 0.7 percentage points lower than the 1.4% recorded for Colorado County. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Rock Island CDP has 93.8% of the land area of nearby Sheridan CDP (5.35 square miles). These areas describe boundaries, not comparable property prices.