San Mateo Park is a populated place LOCATED WITHIN the City of San Mateo. In turn, the City of San Mateo is located within San Mateo County.
San Mateo Park is located at latitude 37.567 and longitude -122.345.
Since San Mateo Park is located within the City of San Mateo, all of the census and demographic data for residents of San Mateo Park are included as part of the information reported for City of San Mateo in the "Profile" tab above.