Fronteras Municipality
Fronteras is a municipality in the List of [states of Mexico|state] of Sonora in north-western Mexico.
In the 2020 Census, the municipality reported a total population of 9,041.
The municipal seat stands at Fronteras.
Towns and villages
There are 71 localities in the municipality of Fronteras, the largest of which are:| Name | 2020 Census Population |
| Esqueda | 7,240 |
| Fronteras | 806 |
| Turicachi | 471 |
| Kilómetro Cuarenta y Siete | 96 |
| Alfonso Ruíz Cortinez | 90 |
| Cuquiarachi | 87 |
| La Reforma | 43 |
| Total Municipality | 9,041 |