Stoney Mountain Post Office Address: 2 Main St, Stony Mountain, MB R0C 3A0 Phone: (204) 344-5689 Other Businesses: Stony Mountain Child Care Center at 81 School Rd, Stony Mountain, MB R0C 3A0 Stony Mountain Ski Area at 11016 E Sellars Hill Rd, Stony Mountain, MB R0C 3A0 Stony Mountain United Church at 9 Main St, Stony Mountain, MB R0C 3A0