| NUMBER | NAME | COUNTY | LAT | LON |
| CO01 | Deer Island | Grand | 400903N | 1055111W |
| CO01 | Elephant Island | Grand | 401025N | 1055159W |
| CO01 | Fishhook Island | Summit | 393531N | 1060403W |
| CO01 | Gull Island | Grand | 401039N | 1055158W |
| CO02 | Hadfield Island | Logan | 403430N | 1031310W |
| CO01 | Harvey Island | Grand | 400937N | 1055055W |
| CO02 | Island, The | Douglas | 391102N | 1051714W |
| CO01 | Rainbow Island | Grand | 401047N | 1055127W |
| CO02 | Scout Island | Weld | 402525N | 1043515W |
| CO01 | Sentinel Island | Summit | 393559N | 1060355W |
| CO01 | Shelter Island | Grand | 401007N | 1055056W |
| CO01 | Silver Dollar Island | Summit | 393500N | 1060321W |
