STAMFORD - The U.S. Postal Service has announced that its Stamford processing center will consolidate a year earlier than expected.

Cheryl Ingstrum, a postal workers union representative, says maintenance employees, mail clerks and mail handlers will keep their jobs, while others may get transferred or receive retirement packages. The move can be traced to a nationwide drop in mail volume from 212 billion pieces in 2007 to 160 billion pieces last year. 

The Stamford facility, which employs more than 400 people, is one of 55 closing across the country.