| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Undercliff | city | New York | United States | 44.34 | -73.97 | 1827 | |
| Undercliff | city | Pennsylvania | United States | 40.51 | -79.95 | 830 | |
| Undercliff | city | Illinois | United States | 41.19 | -89.37 | 830 | |
| Undercliff Junction | city | New Jersey | United States | 40.83 | -74.02 | 6 | |
| Underhill | city | Vermont | United States | 44.53 | -72.95 | 830 | |
| Underhill | city | Wisconsin | United States | 44.88 | -88.38 | 830 | |
| Underhill Center | city | Vermont | United States | 44.51 | -72.90 | 898 | |
| Underkoflers Corner | city | Idaho | United States | 43.62 | -116.67 | 2509 | |
| Underwood | city | Alabama | United States | 34.87 | -87.70 | 830 | |
| Underwood | city | Alabama | United States | 33.15 | -86.86 | 830 | |
| Underwood | city | Georgia | United States | 33.13 | -83.11 | 400 | |
| Underwood | city | Indiana | United States | 38.60 | -85.77 | 830 | |
| Underwood | city | Iowa | United States | 41.39 | -95.68 | 1148 | |
| Underwood | city | Minnesota | United States | 46.29 | -95.87 | 1669 | |
| Underwood | city | New York | United States | 44.09 | -73.68 | 1099 | |
| Underwood | city | North Dakota | United States | 47.46 | -101.14 | 2014 | |
| Underwood | city | Tennessee | United States | 36.61 | -85.99 | 830 | |
| Underwood | city | Texas | United States | 33.99 | -101.84 | 3395 | |
| Underwood | city | Washington | United States | 45.73 | -121.53 | 200 | |
| Underwood | city | Tennessee | United States | 36.00 | -83.63 | 987 | |
| Underwood | city | Kentucky | United States | 37.49 | -87.19 | 380 | |
| Underwood (historical) | city | Arkansas | United States | 35.68 | -91.38 | 232 | |
| Underwood (historical) | city | Maryland | United States | 38.51 | -76.75 | 147 | |
| Underwood Corner | city | Delaware | United States | 39.24 | -75.68 | 45 | |
| Underwood Corner | city | New York | United States | 42.15 | -78.90 | 1669 | |
| Underwood Crossing | city | Florida | United States | 30.97 | -85.58 | 196 | |
| Underwood Crossing | city | Wyoming | United States | 43.50 | -104.94 | 4242 | |
| Underwood Crossroads | city | Alabama | United States | 34.76 | -87.53 | 830 | |
| Underwood Estates | city | Alabama | United States | 34.86 | -87.69 | 830 | |
| Underwood Estates | city | West Virginia | United States | 37.81 | -80.42 | 2509 | |
| Underwood Heights | city | Alabama | United States | 34.63 | -87.74 | 830 | |
| Underwood Heights | city | Washington | United States | 45.74 | -121.53 | 200 | |
| Underwood Park | city | California | United States | 39.86 | -123.72 | 1197 | |
| Underwood Springs (historical) | city | Tennessee | United States | 36.43 | -82.18 | 2509 | |
| Undine | city | Georgia | United States | 32.23 | -81.98 | 150 |