| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Fort Baldwin | city | Maine | United States | 43.75 | -69.79 | 78 | |
| Fort Barker (historical) | city | Kentucky | United States | 38.03 | -84.03 | 1049 | |
| Fort Barnard Heights | city | Virginia | United States | 38.85 | -77.09 | 72 | |
| Fort Barnwell | city | North Carolina | United States | 35.29 | -77.33 | 32 | |
| Fort Basinger | city | Florida | United States | 27.36 | -81.06 | 36 | |
| Fort Bayard | city | New Mexico | United States | 32.80 | -108.15 | 6125 | |
| Fort Bayou (historical) | city | Mississippi | United States | 30.45 | -88.72 | 9 | |
| Fort Bayou Estates | city | Mississippi | United States | 30.42 | -88.79 | 16 | |
| Fort Belknap Agency | city | Montana | United States | 48.48 | -108.77 | 2509 | |
| Fort Bellefontaine | city | Missouri | United States | 38.84 | -90.24 | 830 | |
| Fort Benning | city | Georgia | United States | 32.35 | -84.97 | 321 | |
| Fort Benton | city | Montana | United States | 47.82 | -110.67 | 2660 | |
| Fort Bidwell | city | California | United States | 41.86 | -120.15 | 4507 | |
| Fort Big Spring | city | Colorado | United States | 38.93 | -102.83 | 4498 | |
| Fort Blackmore | city | Virginia | United States | 36.77 | -82.59 | 1669 | |
| Fort Boettcher | city | Colorado | United States | 40.80 | -106.54 | 8389 | |
| Fort Boise (historical) | city | Idaho | United States | 43.83 | -117.01 | 2509 | |
| Fort Braden | city | Florida | United States | 30.42 | -84.54 | 124 | |
| Fort Bragg | city | California | United States | 39.45 | -123.81 | 26 | |
| Fort Branch | city | Indiana | United States | 38.25 | -87.58 | 830 | |
| Fort Branch | city | West Virginia | United States | 37.85 | -81.94 | 830 | |
| Fort Bridger | city | Wyoming | United States | 41.32 | -110.38 | 6778 | |
| Fort Brook Landing | city | Florida | United States | 29.51 | -81.91 | 22 | |
| Fort Brown | city | Ohio | United States | 41.11 | -84.42 | 830 | |
| Fort Buhlow | city | Louisiana | United States | 31.33 | -92.45 | 59 | |
| Fort Bull | city | South Carolina | United States | 32.84 | -80.06 | 9 |