| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Ubero | city | Estado de Oaxaca | Mexico | 17.2830556 | -95.0166667 | 164 | 3830 |
| Union Hidalgo | city | Estado de Oaxaca | Mexico | 16.4666667 | -94.8333333 | 62 | 20568 |
| Union Juarez | city | Estado de Oaxaca | Mexico | 16.7452778 | -96.02778 | 5029 | 1503 |
| Union Zapata | city | Estado de Oaxaca | Mexico | 16.93 | -96.4258333 | 5413 | 7754 |
| Union de Guerrero | city | Estado de Oaxaca | Mexico | 15.9686111 | -96.33 | 2952 | 3861 |
| Union y Libertad | city | Estado de Oaxaca | Mexico | 16.4369444 | -97.7966667 | 1151 | 3221 |
| Unión Hidalgo | city | Estado de Oaxaca | Mexico | 16.4666667 | -94.8333333 | 62 | 20568 |
| Unión Juárez | city | Estado de Oaxaca | Mexico | 16.7452778 | -96.02778 | 5029 | 1503 |
| Unión Zapata | city | Estado de Oaxaca | Mexico | 16.93 | -96.4258333 | 5413 | 7754 |
| Unión de Guerrero | city | Estado de Oaxaca | Mexico | 15.9686111 | -96.33 | 2952 | 3861 |
| Unión y Libertad | city | Estado de Oaxaca | Mexico | 16.4369444 | -97.7966667 | 1151 | 3221 |
| Usila | city | Estado de Oaxaca | Mexico | 17.8975 | -96.5311111 | 328 | 4162 |
| Uvero | city | Estado de Oaxaca | Mexico | 17.2830556 | -95.0166667 | 164 | 3830 |
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