Automated Postal Center - Lamar 110 Main St Lamar, SC 29069 Phone : (843) 326-5211 Business Category Automated Postal Centers Toll-Free           (800) ASK-USPS Fax           (843) 326-5972 Post Office - Lamar 110 Main St Lamar, SC 29069 Phone : (843) 326-5211 Post Office - Lamar Business Category Post Offices Toll-Free           (800) ASK-USPS Fax           (843) 326-5972