Monday marks the busiest day for the U.S. Postal Service. Nationwide, the post office is expected to process more than 600 million pieces of mail.
And in Rapid City, customers had to wait in long lines to get their mail processed. Retail supervisor, Sunny Magnuson says roughly 110,000 letters and cards will come through the Rapid City post office Monday. That's double the number on a typical day.
And while the busiest mail day caught some customers off guard, postal workers were prepared.
"I could of done this days ago but I didn't, had I'd known this was the busiest day however I probably would of not put off quite so much," said Barbara Spedillie while she waited in line at the Rapid City Post Office.
"Traditionally this is our busiest week and this is our busiest Monday. A lot of people want to get it there as a Christmas present so they want it there right at Christmas time so they know if they mail it this week that'll hopefully happen for them," Magnuson.
By the way, the Christmas deadline for first class mail is Friday.