ZIP Code 19397

About Southeastern

Southeastern is a United States Postal Service Sorting and Delivery Center (S&DC) in Tredyffrin Township, Chester County, Pennsylvania, United States, near Devon, which has been open since February 2024. Southeastern was previously a Processing and Distribution Center (P&DC) up until 2012, when it was closed. It was primarily known for its postmark on mail originating in many regional ZIP codes. There is a retail post office co-located at the S&DC.

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