Rancho San Carlos is a populated place LOCATED WITHIN the City of Phoenix. In turn, the City of Phoenix is located within Maricopa County.
Rancho San Carlos is located at latitude 33.6 and longitude -112.018.
Since Rancho San Carlos is located within the City of Phoenix, all of the census and demographic data for residents of Rancho San Carlos are included as part of the information reported for City of Phoenix in the "Profile" tab above.