Updated October 2026. The Denville, NJ post office is at 18 Church Street in downtown Denville, near Santa Land on Clark Street. The retail counter is open six days a week, the lobby opens at 6 a.m., and it is the main office for the 07834 ZIP code. This guide covers its hours, Saturday schedule, PO boxes, mail pickup times, and where to go for the one thing Denville does not do: passports.
Every hour and time below comes from the U.S. Postal Service location data for each office, checked October 10, 2026. Heading downtown anyway? Our downtown Denville guide covers parking and where to eat, and the municipal building guide covers Town Hall offices.
Quick facts
- Address: 18 Church Street, Denville, NJ 07834
- Phone: (973) 625-1700
- Window hours: Monday to Friday 9:30 a.m. to 5 p.m., Saturday 9:30 a.m. to 2 p.m., closed Sunday
- Lobby and PO boxes: Monday to Friday 6 a.m. to 5 p.m., Saturday 6 a.m. to 3 p.m.
- Passports: not offered in Denville. Nearest options are Rockaway, Parsippany, Morris Plains and the County Clerk in Morristown.
- Next closures: Columbus Day (Monday, Oct. 12), Veterans Day (Wednesday, Nov. 11), Thanksgiving (Thursday, Nov. 26) and Christmas (Friday, Dec. 25).
Denville Post Office hours
| Service | Monday to Friday | Saturday | Sunday |
|---|---|---|---|
| Retail window | 9:30 a.m. to 5 p.m. | 9:30 a.m. to 2 p.m. | Closed |
| Package and held mail pickup | 9:30 a.m. to 5 p.m. | 9:30 a.m. to 2 p.m. | Closed |
| Lobby and PO box access | 6 a.m. to 5 p.m. | 6 a.m. to 3 p.m. | Closed |
| Last collection at the building | 5 p.m. | 3 p.m. (lobby) | None |
If you got a “we missed you” slip, the pickup counter keeps the same hours as the retail window. Beyond stamps, shipping, money orders and certified mail, USPS lists burial flags for veterans’ families and federal duck stamps among the services at this location.
Address: 18 Church Street, Denville, NJ 07834
Phone: (973) 625-1700
Hours: Monday to Friday 9:30 a.m. to 5 p.m., Saturday 9:30 a.m. to 2 p.m., Sunday closed
Website: usps.com
Saturday hours
Saturday is the short day. The window closes at 2 p.m., and the lobby, where the PO boxes and the indoor mail slots are, closes at 3 p.m. Dover and Lake Hiawatha keep their windows open until 4 p.m. on Saturday.
Last mail pickup times in Denville
The boxes at the post office are emptied late in the day. The blue street boxes are emptied in the morning, so anything dropped there after 11 a.m. waits for the next pickup.
- 18 Church Street, lobby drops: 5 p.m. weekdays. On Saturday, one lobby drop is collected at 2 p.m. and the other at 3 p.m.
- 18 Church Street, blue box outside: 5 p.m. weekdays, 1:45 p.m. Saturday
- 30 Broadway: 11 a.m. Monday through Saturday
- 84 Broadway: 11 a.m. Monday through Saturday
- 16 Pocono Road: 11 a.m. Monday through Saturday
PO boxes
The Denville office rents PO boxes, and they can be reserved and paid for online through USPS. Box holders can reach their boxes from 6 a.m. to 5 p.m. weekdays and 6 a.m. to 3 p.m. Saturday, and USPS lists box mail as delivered by 10 a.m. each delivery day. Prices depend on box size and rental term and are shown when you reserve, so check the USPS PO box page or ask at the counter rather than relying on an old number.
Passports: where to go instead
Denville does not take passport applications. Most nearby offices want an appointment, and a few set aside walk-in hours.
Rockaway Post Office
The closest passport office to downtown Denville. Passport appointments run Monday and Friday from 9 a.m. to noon and 2 to 4 p.m., and Tuesday through Thursday from 10 a.m. to noon and 2 to 4 p.m. Walk-ins are taken Tuesday through Thursday from 9 to 10 a.m. Passport photos are available.
Address: 1 Bank Street, Suite 9, Rockaway, NJ 07866
Phone: (973) 627-7039
Hours: Window Monday to Friday 8 a.m. to 4:30 p.m., Saturday 9 a.m. to noon
Website: usps.com
Parsippany Post Office
One of three nearby offices with Saturday passport appointments (9:30 to 11 a.m.), along with Dover and Lake Hiawatha. Weekday appointments run 9:30 a.m. to 3:15 p.m., with walk-ins Monday from noon to 3 p.m. It also has a self-service kiosk available around the clock.
Address: 3299 US Highway 46, Parsippany, NJ 07054
Phone: (973) 335-2587
Hours: Window Monday to Friday 9 a.m. to 4:30 p.m., Saturday 9 a.m. to noon
Website: usps.com
Morris Plains Post Office
Passport appointments weekdays from 10:30 a.m. to 4 p.m., plus Saturday walk-ins from 9 a.m. to noon.
Address: 485 Speedwell Avenue, Morris Plains, NJ 07950
Phone: (973) 538-3666
Hours: Window Monday to Friday 10 a.m. to 5 p.m., Saturday 9 a.m. to 1 p.m.
Website: usps.com
Morris County Clerk, Morristown
The county clerk’s passport office takes walk-ins and recommends appointments, especially for groups of four or more. It is open weekdays from 8:15 a.m. to 3:30 p.m. and stays open until 7:30 p.m. most Thursdays. Walk-ins end at 3:15 p.m. on regular weekdays and 6:30 p.m. on Thursdays. Passport photos cost $15. The clerk’s site lists Thursday evenings it skips, so check before you go.
Address: Hall of Records, 10 Court Street, Morristown, NJ
Phone: (973) 285-6161
Hours: Monday to Friday 8:15 a.m. to 3:30 p.m., most Thursdays until 7:30 p.m.
Website: morriscountyclerk.org
Other post offices near Denville
| Office | Address | Phone | Window hours |
|---|---|---|---|
| Mount Tabor | 26 Simpson Ave, Mount Tabor 07878 | (973) 627-9523 | Mon to Fri 8:30 a.m. to 1 p.m. and 2 to 4:30 p.m.; Sat 10 a.m. to noon |
| Mountain Lakes | 13 Elm Rd, Mountain Lakes 07046 | (973) 334-7303 | Mon to Fri 9 a.m. to 5 p.m.; Sat 8:30 a.m. to 2 p.m. |
| Boonton | 501 Main St, Boonton 07005 | (973) 334-2745 | Mon to Fri 9 a.m. to 5 p.m.; Sat 10 a.m. to 3 p.m. |
| Dover | 22 N Sussex St, Dover 07801 | (862) 397-5992 | Mon to Fri 9 a.m. to 5 p.m.; Sat 9 a.m. to 4 p.m. |
| Lake Hiawatha | 494 N Beverwyck Rd, Lake Hiawatha 07034 | (973) 334-7062 | Mon to Fri 9 a.m. to 7 p.m.; Sat 9 a.m. to 4 p.m. |
Lake Hiawatha keeps the latest weekday window around Denville, open until 7 p.m.
Holiday closures
Post offices close on federal holidays. The rest of 2026 brings Columbus Day on Monday, Oct. 12, Veterans Day on Wednesday, Nov. 11, Thanksgiving on Thursday, Nov. 26, and Christmas on Friday, Dec. 25, followed by New Year’s Day on Friday, Jan. 1, 2027. In late November the stretch of Clark Street next to the post office turns into the Rotary’s Santa Land; our Denville holiday guide has the schedule.
Frequently asked questions
What are the Denville post office hours?
The retail window at 18 Church Street is open Monday through Friday from 9:30 a.m. to 5 p.m. and Saturday from 9:30 a.m. to 2 p.m. It is closed Sunday. The lobby and PO boxes open at 6 a.m. Monday through Saturday.
Is the Denville post office open on Saturday?
Yes. The window is open Saturday from 9:30 a.m. to 2 p.m., and the lobby stays open until 3 p.m. for PO boxes and mail drop.
Can I get a passport at the Denville post office?
No. USPS does not list passport services at the Denville office. The closest post offices that take passport applications are Rockaway, Parsippany, Morris Plains and Dover, and the Morris County Clerk in Morristown also accepts applications.
What is the phone number for the Denville post office?
USPS lists (973) 625-1700 for the Denville post office. For tracking and general questions, the national line is 1-800-ASK-USPS.
What time is the last mail pickup in Denville?
The latest pickup in town is 5 p.m. on weekdays at the post office itself. On Saturday the blue box out front is picked up at 1:45 p.m. and the lobby drops at 2 p.m. and 3 p.m. Street boxes on Broadway and Pocono Road are collected at 11 a.m.
What ZIP code is Denville, NJ?
Denville is 07834. The Mount Tabor post office next door uses 07878.
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