United States Postal Service (postoffice) in Sumter, SC handles the delivery of mail and packages across the Sumter County area.
Operator computes a Health score every night at 2 am HST. It's the one number that tells you if this shop is winning, losing, or steady. Here's how United States Postal Service broke down on May 1, 2026.
United States Postal Service is indexed in Operator's Postoffice market index for Sumter, SC.
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The Postoffice shops United States Postal Service competes with most often, ranked by Operator's health score. Tap any row for that shop's full page.
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