Sonic Locations Home » Sonic Locations » Montana Tweet Follow @ffmenuprice Total restaurants in the States 3,126 Locations across the US The restaurants site www.sonicdrivein.com Exact Zip Code - Where to find this location SONIC Drive-In - Billings - 601 Main St Billings, MT 59105 Sonic Drive-In - Great Falls - 2101 10th Ave S Great Falls, MT 59405