All of the post offices in the city of Union City, CA

This page details the 2 post offices in Union City, CA helping you identify the ones that open the earliest or close the latest in your vicinity. The hours mentioned represent the retail hours of operation, a period when staff are present to assist with mailing services and other customer needs. Additionally, many post offices offer extended lobby hours, during which you can access your PO box, leave packages for shipment, or purchase postage via the self-service Automated Postal Center (APC) machines. The listings are organized first by city in alphabetical order, followed by the post office name, and include Street View images of the post offices where possible. Please contact us if you find an error, so that we can correct it.