| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Blue Diamond | city | Kentucky | United States | 37.31 | -83.22 | 1669 | |
| Blue Diamond | city | Nevada | United States | 36.05 | -115.40 | 3553 | |
| Blue Dolphin Estates | city | Maryland | United States | 38.47 | -76.56 | 98 | |
| Blue Dome | city | Idaho | United States | 44.16 | -112.91 | 6125 |