PHOENIX--(BUSINESS WIRE)--FirstBank Holding Company, with 16 banking locations throughout Arizona, today announced its 2015 second quarter financial results for its Phoenix, East and West Valley markets. As of June 30, the FirstBank branches in Arizona increased deposits by 32.8 percent from $228.4 million in 2014 to $303.4 million in 2015. The bank also saw significant growth in total loans, growing from $440.2 million to $587.9 million year-over-year, an increase of 33.6 percent. Additionally