Mather, CA: What you need to know. Looking to move to Mather , CA? We’ve got everything you want to know about the key factors that could make this the best place for you, including Mather , CA real estate. Let’s start with the basics: Mather , CA is located in Sacramento County . It has a population of 4,425, and we have a cool graph below that shows the city’s ethnic diversity, as well as other important facts and figures. What about cost of living in Mather , CA? The median income in Mather , CA is $79,784 and the median home value is $268,800, which should give you a pretty good idea of its affordability. The City of Mather together with the City of Rancho Cordova Host the Annual California Capitol Air Show at Mather Air Port. In 2017 the show was on September 9–10. There is a yearly presence of different Military air craft. This year, to name a few, The Patriots, F-18 Super Hornet and F-22 Raptor. This Annual Celebration also Showcases all Branches of the United States Armed Forces. Mather, Ca. Sacramento, County.