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 11 Post Office locations in Marion County, Illinois.

Residents of Marion 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 Marion County, Illinois Post Office

Alma Post Office

Address
Get Direction
Hours

Centralia Post Office

View Details Call Now (618) 532-6717

Centralia Post Office

Address
Get Direction
Hours

Odin Post Office

Address
Get Direction
Hours

Patoka Post Office

View Details Call Now (618) 432-5922

Patoka Post Office

Address
Get Direction
Hours

Kinmundy Post Office

View Details Call Now (618) 547-3322

Kinmundy Post Office

Address
Get Direction
Hours

Iuka Post Office

Address
Get Direction
Hours

Kell Post Office

Address
Get Direction
Hours

Salem Post Office

Address
Get Direction
Hours

Vernon Post Office

View Details Call Now (618) 432-7723

Vernon Post Office

Address
Get Direction
Hours

Sandoval Post Office

View Details Call Now (618) 247-3895

Sandoval Post Office

Address
Get Direction
Hours

Walnut Hill Post Office

View Details Call Now (618) 532-1387

Walnut Hill Post Office

Address
Get Direction
Hours

Residents of Marion 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 Clinton, Marion, Jefferson.