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Post Offices

Cedar Knolls Post Office
2 Mountain Avenue
Cedar Knolls, NJ 07927

973-539-2312


Whippany Post Office - Closed
(being serviced by)
MORRISTOWN POST OFFICE
150 Ridgedale Ave.
Morristown, NJ 07960

973-539-5890

**To report mail delivery problems, call your local post office and ask to speak with a manager about your concern.  If local efforts are unsuccessful, call the United States Postal Service Call Center at 1-800-275-8777 or the USPS Office of Consumer and Industry Contact at (732) 819-3260. **