DENVER (CBS4)- Postal workers rallied in downtown Denver in a show of support to try to save the U.S. Postal Service and their jobs.

They believe if Congress doesn’t step in 3,600 post offices could close nationwide and thousands would lose their jobs.

In Colorado, 63 of the state’s 390 offices are on the list for possible closure. Post office are also suggesting a five-day delivery service.

“Personally that’s worrisome. I do have 20 years in the postal service. I look for the laying off of young people with children, etc. and families would be really difficult on them,” said National Assn. of Letter Carriers member Cindy Kirby.

The U.S.P.S. lost $5 billion last year. As early as next week the U.S. Senate will take up a bill that would stop the post office closures.