According to the 2015 census , it has a population of 8,349 people .
San Esteban , officially the Municipality of San Esteban , is a 5th class municipality in the province of Ilocos Sur , Philippines .
According to the 2015 census , San Esteban has a population of 8,349 people .
San Esteban , officially the Municipality of San Esteban , is a 5th class municipality in the province of Ilocos Sur , Philippines .