San Luis, officially the Municipality of San Luis, is a municipality in the province of Aurora in the Central Luzon of the Philippines. The population was 27,352 at the 2015 census. In the 2016 electoral roll, it had 15,906 registered voters. ^ Census of Population. "Region III ". Total Population by Province, City, Municipality and Barangay. PSA. Retrieved 20 June 2016. ^ "2016 National and Local Elections Statistics". Commission on Elections. 2016.