List of US Post Office Stores in Idaho Falls, ID Outlet Note Regular Brands US Post Office Idaho Idaho Falls Rating 4.5 based on 76 votes Official Website https://www.usps.com/ Products Postal Service NameAddressPhone Name/Address/Phone US Post Office outlet - Idaho Falls 605 4th St (208) 525-2511 US Post Office outlet - Idaho Falls 875 N Capital Ave (208) 542-0837 US Post Office outlet - Idaho Falls 645 N Skyline Dr (208) 523-4111 US Post Office outlet - Idaho Falls 2820 S 25th E (800) 275-8777 People Also Viewed