BMO Harris Bank - Mesa Share: Banks BMO Harris Bank - Mesa Visit Website Request Info 1510 W. Southern Ave. Mesa, AZ 85202 (480) 898-7150 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.