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San Marcos Post Office in San Marcos, CA

Find San Marcos Post Office in San Marcos, CA 92069 to get information on mail-related services, postal services, postal items and payment, parcel shipment, and mail and parcel delivery.

  • San Marcos Post Office
  • 420 North Twin Oaks Valley Road, San Marcos, CA 92069
  • 760-744-2371
  • Mon-Fri 7:30 AM-5:00 PM
    Sat 7:30 AM-12:00 PM

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