| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| U-yumil-ceh | city | Quintana Roo | Mexico | 18.82 | -87.68 | 3 | 636 |
| Ubero | city | Quintana Roo | Mexico | 18.63 | -88.20 | 3 | 976 |
| Ucum | city | Quintana Roo | Mexico | 18.50 | -88.52 | 68 | 30013 |
| Uh -May | city | Quintana Roo | Mexico | 19.42 | -88.05 | 39 | 447 |
| Uitzilná | city | Quintana Roo | Mexico | 19.85 | -89.05 | 416 | 596 |
| Uitzina | city | Quintana Roo | Mexico | 19.85 | -89.05 | 416 | 596 |
| Unidad Africa | city | Quintana Roo | Mexico | 21.05 | -87.43 | 55 | 596 |
| Unidad Agricola Chan-Xcun | city | Quintana Roo | Mexico | 19.99 | -88.43 | 95 | 447 |
| Unidad Agricola Chechmil | city | Quintana Roo | Mexico | 18.17 | -88.80 | 314 | 894 |
| Unidad Agricola Galeras | city | Quintana Roo | Mexico | 18.06 | -88.92 | 337 | 894 |
| Unidad Agrícola Cuauhtémoc | city | Quintana Roo | Mexico | 19.13 | -88.21 | 78 | 426 |
| Unidad Agrícola El Hular | city | Quintana Roo | Mexico | 17.97 | -88.92 | 374 | 847 |
| Unidad Agrícola Tan Kah | city | Quintana Roo | Mexico | 20.25 | -87.42 | 3 | 0 |
| Unidad Agrícola X.- Hazil | city | Quintana Roo | Mexico | 19.85 | -88.26 | 85 | 447 |
| Unidad Ganadera | city | Quintana Roo | Mexico | 20.97 | -87.34 | 26 | 596 |
| Unidad Ganadera Emiliano Zapata | city | Quintana Roo | Mexico | 21.23 | -87.38 | 36 | 596 |
| Unidad Ganadera La Juventud | city | Quintana Roo | Mexico | 18.29 | -88.82 | 137 | 894 |
| Unidad Ganadera Numero Dos | city | Quintana Roo | Mexico | 20.97 | -87.34 | 26 | 596 |
| Unidad Ganadera Santa Ana | city | Quintana Roo | Mexico | 20.75 | -87.48 | 59 | 596 |
| Unidad Ganadera Tres Pocitos | city | Quintana Roo | Mexico | 19.43 | -88.02 | 39 | 447 |
| Unidad Riego | city | Quintana Roo | Mexico | 19.44 | -88.13 | 26 | 447 |
| Unidad de Riego | city | Quintana Roo | Mexico | 18.59 | -88.47 | 85 | 9743 |
| Unidad de Riego | city | Quintana Roo | Mexico | 19.03 | -88.45 | 82 | 745 |
| Unidad de Riego | city | Quintana Roo | Mexico | 19.85 | -88.91 | 111 | 596 |
| Union | city | Quintana Roo | Mexico | 21.26 | -87.24 | 22 | 596 |
| Urbe Blanca | city | Quintana Roo | Mexico | 18.70 | -88.44 | 101 | 745 |
| Ursulo Galván | city | Quintana Roo | Mexico | 18.72 | -88.25 | 3 | 645 |
| Uvero | city | Quintana Roo | Mexico | 18.63 | -88.20 | 3 | 976 |
| Uxul | city | Quintana Roo | Mexico | 20.32 | -87.64 | 49 | 0 |