Post Offices

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

Cedar Knoll Post Office

Post Office in Cedar Knolls, New Jersey on Mountain Ave. Operating hours, phone number, services information, and other locations.

Address: 2 Mountain Ave, Cedar Knolls, NJ 07927
Phone: 973-539-2312
Fax: 650-577-6045
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Retail Hours

Monday 8:00am - 4:30pm
Tuesday 8:00am - 4:30pm
Wednesday 8:00am - 4:30pm
Thursday 8:00am - 4:30pm
Friday 8:00am - 4:30pm
Saturday 9:00am - 1:00pm
Sunday Closed

Lobby Hours

Monday 5:00pm
Tuesday 5:00pm
Wednesday 5:00pm
Thursday 5:00pm
Friday 5:00pm
Saturday 2:00pm
Sunday Closed

Last Collection Times

Monday 10:00am - 3:00pm
Tuesday 10:00am - 3:00pm
Wednesday 10:00am - 3:00pm
Thursday 10:00am - 3:00pm
Friday 10:00am - 3:00pm
Saturday Closed
Sunday Closed