Post offices serve all communities within a county, from city branch locations to rural contract postal units that serve smaller towns and unincorporated areas with essential mail services. There are 21 Post Office locations in Northumberland County, Pennsylvania.

Residents of Northumberland County should be aware that rural post offices and contract postal units may have limited hours compared to full-service branches. USPS provides a free package pickup service for all residents, including those in rural areas, which can eliminate the need to travel to a post office for outgoing packages.

List of Northumberland County, Pennsylvania Post Office

Elysburg Post Office

View Details Call Now (570) 672-2946

Elysburg Post Office

Address
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Hours

Dalmatia Post Office

View Details Call Now (570) 758-2154

Dalmatia Post Office

Address
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Hours

Dewart Post Office

View Details Call Now (570) 538-5959

Dewart Post Office

Address
Get Direction
Hours

Dornsife Post Office

View Details Call Now (570) 758-3844

Dornsife Post Office

Address
Get Direction
Hours

Herndon Post Office

View Details Call Now (570) 758-9183

Herndon Post Office

Address
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Hours

Kulpmont Post Office

View Details Call Now (570) 373-1350

Kulpmont Post Office

Address
Get Direction
Hours

Mc Ewensville Post Office

View Details Call Now (570) 538-9341

Mc Ewensville Post Office

Address
Get Direction
Hours

Marion Heights Post Office

View Details Call Now (717) 373-3930

Marion Heights Post Office

Address
Get Direction
Hours

Mount Carmel Post Office

View Details Call Now (570) 339-1300

Mount Carmel Post Office

Address
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Hours

Northumberland Post Office

View Details Call Now (570) 473-3581

Northumberland Post Office

Address
Get Direction
Hours

Potts Grove Post Office

View Details Call Now (570) 742-8244

Potts Grove Post Office

Address
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Hours

Paxinos Post Office

View Details Call Now (570) 644-0253

Paxinos Post Office

Address
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Hours

Montandon Post Office

View Details Call Now (570) 524-9464

Montandon Post Office

Address
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Hours

Milton Post Office

View Details Call Now (570) 742-7301

Milton Post Office

Address
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Hours

Shamokin Post Office

View Details Call Now (570) 648-4686

Shamokin Post Office

Address
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Hours

Trevorton Post Office

View Details Call Now (570) 797-8482

Trevorton Post Office

Address
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Hours

Riverside Post Office

View Details Call Now (570) 275-1047

Riverside Post Office

Address
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Hours

Rebuck Post Office

View Details Call Now (570) 425-2585

Rebuck Post Office

Address
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Hours

Turbotville Post Office

View Details Call Now (570) 649-5335

Turbotville Post Office

Address
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Hours

Watsontown Post Office

View Details Call Now (570) 538-5330

Watsontown Post Office

Address
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Hours

Sunbury Post Office

View Details Call Now (570) 286-7176

Sunbury Post Office

Address
Get Direction
Hours

Residents of Northumberland County can use the USPS online location finder to identify the nearest post office, rural branch, or contract postal unit and check their individual hours. Enrolling in USPS Informed Delivery is free and lets all county residents preview incoming mail and packages via email or the USPS app each morning before delivery.

You may also find Post Office locations in neighboring counties including Dauphin, Perry, Northumberland.