Rosario de Tesopaco is a municipality in Sonora in north-western Mexico.

[1] The municipal seat is at Rosario de Tesopaco.

The municipal area is 3,301.90 km2 with a population of 5,432 registered in 2000.

[2] The population of the municipal seat was 2,649 in 2000.

This article about a location in the Mexican state of Sonora is a stub.