Home>Choose State>Cities in Illinois>Institutions in Crystal Lake>BMO Harris Bank Locations in Crystal Lake BMO Harris Bank Branch Locations in Crystal Lake, IL 1. BMO Harris Bank - Crystal Lake Branch 5545 Northwest Highway, Crystal Lake, IL 60014 (815) 455-0202 View Branch 2. BMO Harris Bank - Harris Bank Branch 1105 South State Rt 31, Crystal Lake, IL 60014 (815) 356-3100 View Branch