Template Arizona Public Service Co. Share: Public Utilities Visit Website Request Info PO Box 53999 Phoenix, AZ 85072-3999 (602) 250-1000 (602) 250-3813 (fax) About Map About APS is Arizona's largest and longest-serving electric company. APS serves more than 1.1 million customers and is a winner of the Edison Electric Institute's Edison Award for outstanding contributions to the electric industry. What's Nearby? Distance: 5 10 15 20 25 50 mi.