Post offices in the county of Union, NJ
Use this page to find the post offices in your county that open earliest or stay open latest. The open hours listed are for the post office's retail hours, which means the hours in which a postal service employee is available at the counter to help with mailings and other services. Oftentimes lobbies are open extended hours, and you are able to check your PO box, drop off packages, or use the self-service APC machine to buy postage. The list below is first sorted alphabetically by city, then by post office name. Street View photos of post offices are shown when available. Please contact us if you find an error, so that we can correct it.
Berkeley Heights Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 8:00 AM 4:30 PM Tuesday 8:00 AM 4:30 PM Wednesday 8:00 AM 4:30 PM Thursday 8:00 AM 4:30 PM Friday 8:00 AM 4:30 PM Saturday 9:00 AM 1:00 PM Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-464-1115
Fax: 650-577-4188
Clark Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 10:00 AM 5:00 PM Tuesday 10:00 AM 5:00 PM Wednesday 10:00 AM 5:00 PM Thursday 10:00 AM 5:00 PM Friday 10:00 AM 5:00 PM Saturday 8:30 AM 4:00 PM Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 732-381-0261
Cranford Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 9:00 AM 5:00 PM Tuesday 9:00 AM 5:00 PM Wednesday 9:00 AM 5:00 PM Thursday 9:00 AM 5:00 PM Friday 9:00 AM 5:00 PM Saturday 9:00 AM 1:00 PM Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-276-3506
Fax: 650-577-4100
Bayway Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 10:00 AM 5:00 PM Tuesday 10:00 AM 5:00 PM Wednesday 10:00 AM 5:00 PM Thursday 10:00 AM 5:00 PM Friday 10:00 AM 5:00 PM Saturday 10:00 AM 2:00 PM Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-351-0983
Fax: 908-352-5485
Elizabeth Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 7:30 AM 5:30 PM Tuesday 7:30 AM 5:30 PM Wednesday 7:30 AM 5:30 PM Thursday 7:30 AM 5:30 PM Friday 7:30 AM 5:30 PM Saturday 7:30 AM 2:00 PM Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-820-8490
Fax: 651-675-1695
Elmora Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 10:00 AM 5:00 PM Tuesday 10:00 AM 5:00 PM Wednesday 10:00 AM 5:00 PM Thursday 10:00 AM 5:00 PM Friday 10:00 AM 5:00 PM Saturday 10:00 AM 2:00 PM Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-354-5697
Fax: 908-352-5485
North Elizabeth Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 10:00 AM 5:00 PM Tuesday 10:00 AM 5:00 PM Wednesday 10:00 AM 5:00 PM Thursday 10:00 AM 5:00 PM Friday 10:00 AM 5:00 PM Saturday Closed Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-355-0176
Fax: 908-352-5485
Union Square Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 10:00 AM 5:00 PM Tuesday 10:00 AM 5:00 PM Wednesday 10:00 AM 5:00 PM Thursday 10:00 AM 5:00 PM Friday 10:00 AM 5:00 PM Saturday Closed Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-352-2338
Fax: 908-382-5485
Fanwood Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 8:30 AM 5:00 PM Tuesday 8:30 AM 5:00 PM Wednesday 8:30 AM 5:00 PM Thursday 8:30 AM 5:00 PM Friday 8:30 AM 5:00 PM Saturday 8:30 AM 1:00 PM Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-322-7978
Fax: 650-577-6217
Garwood Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 8:30 AM 5:00 PM Tuesday 8:30 AM 5:00 PM Wednesday 8:30 AM 5:00 PM Thursday 8:30 AM 5:00 PM Friday 8:30 AM 5:00 PM Saturday 8:30 AM 1:00 PM Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-789-0315
Fax: 650-577-4391
Hillside Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 10:00 AM 4:15 PM Tuesday 10:00 AM 4:15 PM Wednesday 10:00 AM 4:15 PM Thursday 10:00 AM 4:15 PM Friday 10:00 AM 4:15 PM Saturday 10:00 AM 2:00 PM Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-527-0648
Industrial Hillside Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 10:00 AM 5:00 PM Tuesday 10:00 AM 5:00 PM Wednesday 10:00 AM 5:00 PM Thursday 10:00 AM 5:00 PM Friday 10:00 AM 5:00 PM Saturday 10:00 AM 2:00 PM Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 973-926-2645
Fax: 650-577-4081
Kenilworth Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 9:00 AM 4:45 PM Tuesday 9:00 AM 4:45 PM Wednesday 9:00 AM 4:45 PM Thursday 9:00 AM 4:45 PM Friday 9:00 AM 4:45 PM Saturday 9:00 AM 12:45 PM Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-241-9823
Fax: 650-577-4395
Grasselli Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 8:30 AM 1:00 PM Tuesday 8:30 AM 1:00 PM Wednesday 8:30 AM 1:00 PM Thursday 8:30 AM 1:00 PM Friday 8:30 AM 1:00 PM Saturday Closed Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-862-3984
Linden Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 10:00 AM 7:00 PM Tuesday 10:00 AM 7:00 PM Wednesday 10:00 AM 7:00 PM Thursday 10:00 AM 7:00 PM Friday 10:00 AM 7:00 PM Saturday 8:30 AM 4:00 PM Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-925-8836
Fax: 650-577-4403
Mountainside Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 9:00 AM 4:30 PM Tuesday 9:00 AM 4:30 PM Wednesday 9:00 AM 4:30 PM Thursday 9:00 AM 4:30 PM Friday 9:00 AM 4:30 PM Saturday 9:00 AM 12:00 PM Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-233-0148
Fax: 650-577-4371
New Providence Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 8:00 AM 4:30 PM Tuesday 8:00 AM 4:30 PM Wednesday 8:00 AM 4:30 PM Thursday 8:00 AM 4:30 PM Friday 8:00 AM 4:30 PM Saturday 9:00 AM 2:00 PM Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-665-2075
Fax: 650-577-4194
Muhlenberg Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 10:00 AM 4:00 PM Tuesday 10:00 AM 4:00 PM Wednesday 10:00 AM 4:00 PM Thursday 10:00 AM 4:00 PM Friday 10:00 AM 4:00 PM Saturday 8:30 AM 12:30 PM Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-753-1480
Fax: 650-577-4413
Netherwood Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 10:00 AM 4:00 PM Tuesday 10:00 AM 4:00 PM Wednesday 10:00 AM 4:00 PM Thursday 10:00 AM 4:00 PM Friday 10:00 AM 4:00 PM Saturday 9:30 AM 12:30 PM Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-753-0445
Fax: 650-577-4426
North Plainfield Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 12:00 PM 4:00 PM Tuesday 12:00 PM 4:00 PM Wednesday 12:00 PM 4:00 PM Thursday 12:00 PM 4:00 PM Friday 12:00 PM 4:00 PM Saturday Closed Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-753-4072
Plainfield Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 8:30 AM 5:00 PM Tuesday 8:30 AM 5:00 PM Wednesday 8:30 AM 5:00 PM Thursday 8:30 AM 5:00 PM Friday 8:30 AM 5:00 PM Saturday 8:00 AM 1:00 PM Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-226-5244
Fax: 650-577-4408
Sta A Plainfield Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 11:00 AM 3:00 PM Tuesday 11:00 AM 3:00 PM Wednesday 11:00 AM 3:00 PM Thursday 11:00 AM 3:00 PM Friday 11:00 AM 3:00 PM Saturday 8:30 AM 12:30 PM Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-753-6618
Rahway Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 10:00 AM 5:00 PM Tuesday 10:00 AM 5:00 PM Wednesday 10:00 AM 5:00 PM Thursday 10:00 AM 5:00 PM Friday 10:00 AM 5:00 PM Saturday 8:30 AM 1:00 PM Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 732-388-3264
Fax: 650-577-4211
Roselle Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 10:00 AM 5:00 PM Tuesday 10:00 AM 5:00 PM Wednesday 10:00 AM 5:00 PM Thursday 10:00 AM 5:00 PM Friday 10:00 AM 5:00 PM Saturday 10:00 AM 2:00 PM Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-245-3218
Fax: 650-577-4082
Roselle Park Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 8:00 AM 5:00 PM Tuesday 8:00 AM 5:00 PM Wednesday 8:00 AM 5:00 PM Thursday 8:00 AM 5:00 PM Friday 8:00 AM 5:00 PM Saturday 8:00 AM 1:00 PM Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-241-8541
Fax: 908-245-5664
Scotch Plains Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 9:00 AM 5:00 PM Tuesday 9:00 AM 5:00 PM Wednesday 9:00 AM 5:00 PM Thursday 9:00 AM 5:00 PM Friday 9:00 AM 5:00 PM Saturday 9:00 AM 2:00 PM Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-322-0674
Fax: 650-577-4406
Springfield Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 9:00 AM 5:00 PM Tuesday 9:00 AM 5:00 PM Wednesday 9:00 AM 5:00 PM Thursday 9:00 AM 5:00 PM Friday 9:00 AM 5:00 PM Saturday 10:00 AM 4:00 PM Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 973-924-2013
Fax: 650-577-4375
Summit Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 10:00 AM 4:00 PM Tuesday 10:00 AM 4:00 PM Wednesday 10:00 AM 4:00 PM Thursday 10:00 AM 4:00 PM Friday 10:00 AM 4:00 PM Saturday 10:00 AM 1:00 PM Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-277-1737
Fax: 651-994-3287
Chestnut Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 8:30 AM 1:30 PM 2:00 PM 3:30 PM Tuesday 8:30 AM 1:30 PM 2:00 PM 3:30 PM Wednesday 8:30 AM 1:30 PM 2:00 PM 3:30 PM Thursday 8:30 AM 1:30 PM 2:00 PM 3:30 PM Friday 8:30 AM 1:30 PM 2:00 PM 3:30 PM Saturday Closed Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-686-2319
Union Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 10:00 AM 5:00 PM Tuesday 10:00 AM 5:00 PM Wednesday 10:00 AM 5:00 PM Thursday 10:00 AM 5:00 PM Friday 10:00 AM 5:00 PM Saturday 8:00 AM 1:00 PM Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-378-6129
Fax: 650-577-4362
Union Center Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 9:00 AM 1:30 PM 2:30 PM 4:30 PM Tuesday 9:00 AM 1:30 PM 2:30 PM 4:30 PM Wednesday 9:00 AM 1:30 PM 2:30 PM 4:30 PM Thursday 9:00 AM 1:30 PM 2:30 PM 4:30 PM Friday 9:00 AM 1:30 PM 2:30 PM 4:30 PM Saturday Closed Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-964-5706
Fax: 908-686-6038
Vauxhall Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 8:30 AM 5:00 PM Tuesday 8:30 AM 5:00 PM Wednesday 8:30 AM 5:00 PM Thursday 8:30 AM 5:00 PM Friday 8:30 AM 5:00 PM Saturday 8:00 AM 12:00 PM Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-686-2341
Fax: 650-577-4361
Westfield Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Open hours
Day Open Close Monday 10:00 AM 5:00 PM Tuesday 10:00 AM 5:00 PM Wednesday 10:00 AM 5:00 PM Thursday 10:00 AM 5:00 PM Friday 10:00 AM 5:00 PM Saturday 9:00 AM 1:00 PM Sunday Closed - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 908-233-4053
Fax: 650-577-4424