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.

Street View Image of Berkeley Heights Post Office in Berkeley Heights, NJ

Berkeley Heights Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
364 Springfield Ave Berkeley Heights , NJ 07922-9998

Get directions

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
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Street View Image of Clark Post Office in Clark, NJ

Clark Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
1087 Raritan Rd Clark , NJ 07066-9998

Get directions

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

Phone: 732-381-0261

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Street View Image of Cranford Post Office in Cranford, NJ

Cranford Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
3 Miln St Cranford , NJ 07016-9998

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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
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Street View Image of Bayway Post Office in Elizabeth, NJ

Bayway Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
544 Bayway Ave Elizabeth, NJ 07202-9991

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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
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Street View Image of Elizabeth Post Office in Elizabeth, NJ

Elizabeth Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
310 N Broad St Elizabeth, NJ 07208-9998

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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
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Street View Image of Elmora Post Office in Elizabeth, NJ

Elmora Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
175 Elmora Ave Ste 1 Elizabeth, NJ 07202-9992

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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
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Street View Image of North Elizabeth Post Office in Elizabeth, NJ

North Elizabeth Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
772 Newark Ave Elizabeth, NJ 07208-9991

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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
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Street View Image of Union Square Post Office in Elizabeth, NJ

Union Square Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
946 Elizabeth Ave Elizabeth, NJ 07201-9992

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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
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Street View Image of Fanwood Post Office in Fanwood, NJ

Fanwood Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
275 South Ave Fanwood , NJ 07023-9998

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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
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Street View Image of Garwood Post Office in Garwood, NJ

Garwood Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
202 Center St Garwood , NJ 07027-9998

Get directions

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
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Street View Image of Hillside Post Office in Hillside, NJ

Hillside Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
1146 Liberty Ave Hillside, NJ 07205-9991

Get directions

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

Phone: 908-527-0648

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Street View Image of Industrial Hillside Post Office in Hillside, NJ

Industrial Hillside Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
397 Hillside Ave Hillside, NJ 07205-9992

Get directions

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
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Street View Image of Kenilworth Post Office in Kenilworth, NJ

Kenilworth Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
641 Boulevard Kenilworth , NJ 07033-9998

Get directions

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
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Street View Image of Grasselli Post Office in Linden, NJ

Grasselli Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
938 S Wood Ave Linden, NJ 07036-9992

Get directions

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

Phone: 908-862-3984

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Street View Image of Linden Post Office in Linden, NJ

Linden Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
400 N Wood Ave Ste A Linden, NJ 07036-9998

Get directions

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
  • Stamps.com logo
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Street View Image of Mountainside Post Office in Mountainside, NJ

Mountainside Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
604 Sherwood Pkwy Mountainside , NJ 07092-9992

Get directions

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
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Street View Image of New Providence Post Office in New Providence, NJ

New Providence Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
598 Central Ave Ste 7 New Providence , NJ 07974-9998

Get directions

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
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Street View Image of Muhlenberg Post Office in Plainfield, NJ

Muhlenberg Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
1080 Arlington Ave Plainfield, NJ 07060-9991

Get directions

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
  • Stamps.com logo
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Street View Image of Netherwood Post Office in Plainfield, NJ

Netherwood Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
1120 North Ave Plainfield, NJ 07062-9998

Get directions

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
  • Stamps.com logo
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Street View Image of North Plainfield Post Office in Plainfield, NJ

North Plainfield Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
9 Jackson Ave Plainfield, NJ 07060-9992

Get directions

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

Phone: 908-753-4072

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Street View Image of Plainfield Post Office in Plainfield, NJ

Plainfield Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
201 Watchung Ave Plainfield, NJ 07060-9998

Get directions

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
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Street View Image of Sta A Plainfield Post Office in Plainfield, NJ

Sta A Plainfield Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
14 Clinton Ave Plainfield, NJ 07063-9998

Get directions

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

Phone: 908-753-6618

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Street View Image of Rahway Post Office in Rahway, NJ

Rahway Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
123 E Milton Ave Rahway , NJ 07065-9998

Get directions

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
  • Stamps.com logo
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Street View Image of Roselle Post Office in Roselle, NJ

Roselle Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
104 Chestnut St Roselle , NJ 07203-9998

Get directions

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
  • Stamps.com logo
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Street View Image of Roselle Park Post Office in Roselle Park, NJ

Roselle Park Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
290 Chestnut St Roselle Park , NJ 07204-9998

Get directions

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
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Street View Image of Scotch Plains Post Office in Scotch Plains, NJ

Scotch Plains Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
536 Park Ave Scotch Plains , NJ 07076-9998

Get directions

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
  • Stamps.com logo
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Street View Image of Springfield Post Office in Springfield, NJ

Springfield Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
210 Mountain Ave Springfield , NJ 07081-9998

Get directions

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
  • Stamps.com logo
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Street View Image of Summit Post Office in Summit, NJ

Summit Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
61 Maple St Summit , NJ 07901-9998

Get directions

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
  • Stamps.com logo
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Street View Image of Chestnut Post Office in Union, NJ

Chestnut Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
611 Chestnut St Union, NJ 07083-9991

Get directions

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

Phone: 908-686-2319

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Street View Image of Union Post Office in Union, NJ

Union Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
1130 W Chestnut St Union, NJ 07083-9998

Get directions

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
  • Stamps.com logo
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Street View Image of Union Center Post Office in Union, NJ

Union Center Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
1965a Morris Ave Union, NJ 07083-9993

Get directions

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
  • Stamps.com logo
    Buy postage online
    Discounted USPS and UPS rates of up to 84%.
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Street View Image of Vauxhall Post Office in Vauxhall, NJ

Vauxhall Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
2215 Springfield Ave Vauxhall , NJ 07088-9998

Get directions

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
  • Stamps.com logo
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    Discounted USPS and UPS rates of up to 84%.
    Promo code
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Street View Image of Westfield Post Office in Westfield, NJ

Westfield Post Office is currently open

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
153 Central Ave Westfield , NJ 07090-9998

Get directions

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
  • Stamps.com logo
    Buy postage online
    Discounted USPS and UPS rates of up to 84%.
    Promo code
    STAMPS100
    $100 value