Home>Choose State>Cities in Wisconsin>Institutions in Beloit>BMO Harris Bank Locations in Beloit BMO Harris Bank Branch Locations in Beloit, WI 1. BMO Harris Bank - Beloit Branch 500 East Grand Avenue, Beloit, WI 53511 View Branch 2. BMO Harris Bank - Prairie Branch 2850 Prairie Avenue, Beloit, WI 53511 View Branch