Post Office - Elk Creek 15668 State Route H Elk Creek, MO 65464 Phone : (417) 962-4425 Post Office - Elk Creek Business Category Post Offices Toll-Free           (800) ASK-USPS U S Government--post Offices, Elk Creek 15668 State Route H Cabool, MO 65689 Phone : (417) 962-4425 Business Category Government Offices-Federal Post Offices Government Offices & Public Schools