| Southeastern, Pennsylvania | |
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| — Unincorporated area — | |
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Southeastern, Pennsylvania
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| Coordinates: | |
| Country | United States |
| State | Pennsylvania |
| County | Chester |
| Time zone | Eastern (EST) (UTC-5) |
| • Summer (DST) | EDT (UTC-4) |
| ZIP codes | |
| FIPS code | |
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Southeastern is an unincorporated community in Chester County, Pennsylvania, United States, near Devon. It is primarily known for its post office. Many bills for Verizon Communications and Comcast are sent to this post office. Videos for Netflix are also sent to this post office for customers in the Philadelphia region. This post office serves as the regional mail center for the 193xx group of zip codes and post offices, and much of the mail from this area to the rest of the country bears a Southeastern, PA 193 postmark instead of the actual zip code of origin.