Denville Post Office

18 Church St, Denville, NJ 07834

Contact Numbers

Phone: 973-625-1700
Fax: 650-577-4317
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Retail Hours

Lobby Hours
PO Box Access Available

Monday 6:00am - 5:00pm
Tuesday 6:00am - 5:00pm
Wednesday 6:00am - 5:00pm
Thursday 6:00am - 5:00pm
Friday 6:00am - 5:00pm
Saturday 6:00am - 3:00pm
Sunday Closed

Last Collection Times

Monday 5:00pm
Tuesday 5:00pm
Wednesday 5:00pm
Thursday 5:00pm
Friday 5:00pm
Saturday 3:00pm
Sunday Closed

*This facility does not process US Passports applications or renewals. Check nearby locations below.

  • Burial Flags
  • Business Line
  • Business Reply Mail Account Balance
  • Business Reply Mail New Permit
  • Duck Stamps
  • General Delivery
  • Money Orders (Domestic)
  • Money Orders (Inquiry)
  • Money Orders (International)
  • Packaged Stamps
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online
  • Lot Parking

Visit our Links Page for Holiday Schedule, Change of Address, Hold Mail/Stop Delivery, PO Box rentals and fees, and Available Jobs.

*Please call to verify information. Is anything incorrect? Let us know here

Nearby Post Offices:

Mount Tabor
26 Simpson Ave
0.9 mile away

1 Bank St Ste 9
1.4 miles away

Mountain Lakes
13 Elm Rd
1.8 miles away

3299 Us Highway 46
2.1 miles away


*Comments below are not read by postal employees. Please do not post personal information.

*By clicking Submit, you agree to our Privacy Policy & Terms of Use.


I've always had pleasant experiences and found the workers to be helpful and knowledgeable.


Monday August 3rd, 2020 2:53 PM I was at the Denville N.J. Postal Office in Morris County. I had to drop off a return item to Amazon. I waited in line over 10 minutes and then I was serviced by a postal cashier. On my Amazon drop-off item, its printed shipping label stated that "NO POSTAGE NECESSARY IN THE UNITED STATES". Despite this, he stated that I needed to put the item in an envelope and tape the label on. I asked him to specify which envelope I needed to put the item in. His response was that any envelope in the back would do, which had confused me because there are all sorts of envelopes, postal envelopes, and brown envelopes in assorted sizes. I was under the impression that the post office would provide envelopes or boxes, prepaid, to be sent back to Amazon. I assumed this would be similar to what the UPS stores do. With an extreme attitude, he said, "any middle sized envelope", so I actually estimated the size of the merchandise and chose the large bag needed to fit it. Upon this action, he stated that I needed to tape the label on the envelope and I replied that I had no tape on me. I requested that he help me with this transaction. He responded rudely that according to the Postal regulation, they do not provide tape to ship merchandise. While this was happening, there was an worker in a black shirt in the back of the register, stating to the other customers in the back of the line, "Sorry for the hold up" and then she disappeared to the back. Later, I found out that she was actually the Postmaster of Denville Post Office. The clerk stated that I had to pay $1.19 for the envelope, in which I reached down into my cargo pants' pocket to retrieve my wallet. In an aggressive manner, he asked "what my problem was" (is there a problem?). I asked him to complete the transaction so that I can leave because I was very uncomfortable with his aggressive approach. When I got home, I contacted the Denville Post Office at 973-625-1700. I spoke with the supervisor on shift and explained to her about how I was treated by the clerk. She was very understanding and professional in her response to the aggression without any provocation on my part, and she stated that she would talk to the Clerk. I also contacted the Postal Regulatory Commission (202-789-6800). I wrote complaints about this incident on the USPS website; I expect acknowledgement of this incident and a change in both employees' work ethics.

* is not a part of, or affiliated with, the official United States Postal Service (USPS).