BMO Harris Bank - Williams Field Share: Banks BMO Harris Bank - Williams Field Visit Website Request Info 1481 E. Williams Field Rd. Gilbert, AZ 85295 (480) 224-4960 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.