| Official Name: | Rockport Colony, South Dakota |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | USA South Dakota |
| Pushpin Label Position: | none |
| Pushpin Map Caption: | Location of Rockport Colony, South Dakota |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | South Dakota |
| Subdivision Type2: | County |
| Subdivision Name2: | Hanson |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 0.56 |
| Area Land Km2: | 0.56 |
| Area Water Km2: | 0.00 |
| Area Total Sq Mi: | 0.22 |
| Area Land Sq Mi: | 0.22 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Total: | 77 |
| Population Density Km2: | 136.57 |
| Population Density Sq Mi: | 353.21 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Coordinates: | 43.5819°N -97.8431°W |
| Elevation Ft: | 1250 |
| Postal Code Type: | ZIP code |
| Postal Code: | 57311 |
| Area Code: | 605 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 2813030 |
Rockport Colony is a small unincorporated community and census-designated place (CDP) in Hanson County, South Dakota, United States. It is located on the James River, southwest of Alexandria and southeast of Mitchell, and is part of the Mitchell Micropolitan Statistical Area. The population was 77 at the 2020 census.[3] The elevation is 1,224 feet.
The Rockport Colony Elementary School, which had 24 students in 2008,[4] [5] is not located in Rockport Colony, but is physically in the town of Alexandria.