San Mateo, officially the Municipality of San Mateo,, is a 1st class municipality in the province of Rizal, Philippines. According to the 2015 census, it has a population of 579,925. It is bordered by Quezon City to the west, the cities of Marikina and Antipolo to the south, and to the north by the municipality of Rodriguez. San Mateo is approximately 24 kilometres east of Manila and 11 kilometres north of Pasig, the former provincial capital of Rizal.
Conurbated to the urban agglomeration of the Greater Manila Area, San Mateo is one of the fastest growing municipalities in Rizal Province, according to the Metropolitan Manila Development Authority and the Provincial Government of Rizal.
Wikipedia https://en.wikipedia.org/wiki/San_Mateo,_Rizal
Coordinates 14°41'39.488" N 121°7'5.871" E