Great Falls Regional Credit Union Address: 34 Bates St, Lewiston, ME 04240 Phone: (207) 784-8494 Mortgages, Loans, Credit Unions Other Businesses: Rainbow Federal Credit Union at 391 Main St, Lewiston, ME 04240 Lisbon Community Federal CU at 802 Sabattus St, Lewiston, ME 04240 Sawyer, Nancy at 183 Main St, Lewiston, ME 04240