Post Offices

Post Offices in & near New Castle, New Hampshire. Operating hours, locations, phone/fax number, services information.

New Castl Post Office

Post Office in New Castle, New Hampshire on Main St. Operating hours, phone number, services information, and other locations.

Address: 73 Main St, New Castle, NH 03854
Phone: 603-436-3485
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Retail Hours

Monday 8:30am - 12:30pm, 2:30pm - 4:45pm
Tuesday 8:30am - 12:30pm, 2:30pm - 4:45pm
Wednesday 8:30am - 12:30pm, 2:30pm - 4:45pm
Thursday 8:30am - 12:30pm, 2:30pm - 4:45pm
Friday 8:30am - 12:30pm, 2:30pm - 4:45pm
Saturday 9:00am - 11:45am
Sunday Closed

Lobby Hours

Monday 4:45pm
Tuesday 4:45pm
Wednesday 4:45pm
Thursday 4:45pm
Friday 4:45pm
Saturday 11:45am
Sunday Closed

Last Collection Times

Monday 7:00am - 12:00pm, 2:30pm - 4:00pm
Tuesday 7:00am - 12:00pm, 2:30pm - 4:00pm
Wednesday 7:00am - 12:00pm, 2:30pm - 4:00pm
Thursday 7:00am - 12:00pm, 2:30pm - 4:00pm
Friday 7:00am - 12:00pm, 2:30pm - 4:00pm
Saturday Closed
Sunday Closed