The Corning Post Office is located at 608 7th Street. The current building was built in 1939 during the Roosevelt administration. It cost $75,000 to build. There is a WPA (Works Project Association) mural in the lobby. It was painted by Marian Gilmore in 1941. The Corning Post Office has 3 rural routes and 2 city routes. It serves approximately 1400 customers six days a week. Window hours of operation are 8:30-11:30 and 12:30-4:30 Monday though Friday.
The Prescott Post Office is located at 113 6th Avenue. It has one rural route and box section customers. It serves about 290 customers. Their window hours are 8:00-12:00 and 1:00 -3:50.