Greenfield Estates is a populated place LOCATED WITHIN the City of Mesa. In turn, the City of Mesa is located within Maricopa County.
Greenfield Estates is located at latitude 33.424 and longitude -111.736.
Since Greenfield Estates is located within the City of Mesa, all of the census and demographic data for residents of Greenfield Estates are included as part of the information reported for City of Mesa in the "Profile" tab above.