BMO Harris Bank - Sun City Share: Banks BMO Harris Bank - Sun City Visit Website Request Info 13250 N. Del Webb Blvd. Sun City, AZ 85351 (623) 876-6560 About Map About Full service banking. Personal checking, savings, credit cards, loans and CD's. Business checking, savings, loans, lines and credit cards. Mortgages, Investments and Private Banking. What's Nearby? Distance: 5 10 15 20 25 50 mi.