The USDA has rercently changed it's areas. The Website to check is http://www.usda.gov.I just looked and the boarder of the area is west of SR-85. Depending on where you are looking this loan may not work for you. However, a lender just introduced me to an Arizona program that called "Home in 5" that does not have a "map" to work off of. It offere 5% down payment / closing cost assisance to purchase a home, And you do not have to pay it back! Yes $5,000 on a $100,000.00 home.
Contact a Lender to ask about both programs. I have been a Realtor since 2006 and lived in Buckeye since 2004. I can help, please give me a call.