Post Office

Mail at 91

Merrimack’s Campus Post Office, operated as a contract unit of the United States Postal Service, serves the entire campus community. We handle all College mail sorting and delivery and maintain student mail stops. Looking for your Student Mail Stop Code?

Merrimack Post Office Hours & Location


  • We are on the second floor of the Sakowich Campus Center.


  • Weekdays: Mon. through Fri., 8:30 a.m.-4 p.m.
  • Weekends: Closed

Special Hours

  • College Holidays: Closed
  • Summer: Open
  • Academic Breaks: Open

Services Available

  • Purchase stamps and U.S. Postal Service money orders.
  • Send express mail, priority mail, certified mail, registered mail, insured mail and international mail.
  • Get ZIP codes and postal information.
  • Drop off prepaid online returns.
  • Student Mail
  • We do not accept same-day deliveries from local businesses, such as Whole Foods Market, Walmart, Target, Staples, CVS, Stop & Shop, etc.

Payment Methods

  • Cash
  • Checks (with ID)
  • Debit and credit cards
  • Money orders (may be purchased with cash and debit cards only)