As of the 2010 census, the village had a total population of 355, making it the eleventh-largest locality in the municipality and the second-largest in the territorial sub-committee.

The village of San Jerónimo was first annotated as one of the settlements comprising the jurisdiction of Cocula in 1744.

According to the 2010 Censo General de Población y Vivienda, San Jerónimo (Los Barbosa) had a population of 355 inhabitants, of which 164 were male and 191 were female.

[2] San Jerónimo is one of the 18 municipal agencies of San Martín de Hidalgo Municipality and belongs to the territorial sub-committee of Santa Cruz de las Flores.

[3] San Jerónimo was incorporated into an ejido on March 25, 1925, with a total of 582 hectares of communal land.