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 12 Post Office locations in Whiteside County, Illinois.

Residents of Whiteside 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 Whiteside County, Illinois Post Office

Deer Grove Post Office

View Details Call Now (815) 438-4223

Deer Grove Post Office

Address
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Hours

Albany Post Office

View Details Call Now (309) 887-4433

Albany Post Office

Address
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Hours

Erie Post Office

Address
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Hours

Fenton Post Office

View Details Call Now (815) 778-4869

Fenton Post Office

Address
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Hours

Fulton Post Office

View Details Call Now (815) 589-2020

Fulton Post Office

Address
Get Direction
Hours

Galt Post Office

Address
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Hours

Lyndon Post Office

View Details Call Now (815) 778-4864

Lyndon Post Office

Address
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Hours

Morrison Post Office

View Details Call Now (815) 772-3311

Morrison Post Office

Address
Get Direction
Hours

Sterling Post Office

View Details Call Now (815) 625-0812

Sterling Post Office

Address
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Hours

Tampico Post Office

View Details Call Now (815) 438-7222

Tampico Post Office

Address
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Hours

Prophetstown Post Office

View Details Call Now (815) 537-2710

Prophetstown Post Office

Address
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Hours

Rock Falls Post Office

View Details Call Now (815) 626-0514

Rock Falls Post Office

Address
Get Direction
Hours

Residents of Whiteside 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 Whiteside, Carroll.