The Postal Service announced Thursday that four mail processing facilities in Oklahoma may close, including the Poteau site.
The other three are expected to be McAlester, Tulsa and Woodward. The move would result in mail being shipped to Oklahoma City for sorting.
The Postal Service lost $8.5 billion last year and mail volume has decline by more than 43 billion items over the last five years as users turn to the internet.
Some 252 mail processing facilities in the United States will be reviewed. There are currently 487 offices. This is along with the 3,700 local post offices which could close.
Closing the mail-processing facilities could affect 35,000 workers.
The Post Office also plans to reduce current delivery standards for first-class mail. Instead of the current one-three days, this will result in a change to two to three days.