[3] The town celebrates its annual fiesta on December 13, the feast of its patroness, Saint Lucy.It is bordered to the north by the city of Candon, Santa Cruz to the south, and Salcedo to the west.[3] The population density was 520 inhabitants per square kilometre (1,300/sq mi).Poverty incidence of Santa Lucia Source: Philippine Statistics Authority[10][11][12][13][14][15][16][17] On May 20, Santa Lucia celebrated the 1st Rambak Mani Festival 2024 to promote its One Town, One Product — peanut industry.[18] Santa Lucia, belonging to the second congressional district of the province of Ilocos Sur, is governed by a mayor designated as its local chief executive and by a municipal council as its legislative body in accordance with the Local Government Code.