First Interstate Bank - Amy Pontius, Colstrip, MT Instalment Loans Business Loan Personal Loans Car Title Loans Online Loans Colstrip, MT 6210 Main Street. ZIP Code: 59323 (406) 748-2840 Montana, Colstrip, Instalment Loans About First Interstate Bank - Amy Pontius Opening Hours Monday 9:00 AM – 4:00 PM Tuesday 9:00 AM – 4:00 PM Wednesday 9:00 AM – 4:00 PM Thursday 9:00 AM – 4:00 PM Friday 9:00 AM – 5:00 PM Saturday Closed Sunday Closed Ener G Comm Federal CU Instalment Loans in Colstrip, Montana First Interstate Bank - Amy Pontius on the map Show on Google Map