Demographics
The municipality's population started a total number of eleven inhabitants during the 1930 National Census of Population, and gradually increased tp 1,036 in the following years of census (1908 census) with a highest geometric growth rate in its history at 33.26% per year. This end dates back to the time when the Bago tribes still growing, as describe in the municipal legend. During those times only mountain trails to trek on, and the residents have abundant virgin resources abound. Perhaps, the first sixteen (16) years of relatively rapid population increase is a classic exampleof what geographic information about the land, and demography, for that matter would certainly bring to an upland municipality. Based on the 2007 population statistical data, the municipality has a total population of 2,453.
Read more about this topic: Sigay, Ilocos Sur