South Texas Medical Cntr
Post Office
Mon-Fri 8:00am - 5:30pm, Sat 8:00am - 1:00pm, Sun Closed
San Antonio, TX Post Offices
Listing data as of July 31, 2026 · Confirm on USPS.com
San Antonio has 4 locations serving ZIP codes 78229, 78237 and 78245, spanning about 7.3 miles. Each location sets its own hours and services, so confirm before you visit — see the cards below for the one nearest you.
Change of Address
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Hold Mail Service
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Money orders are a safe way to send payments through the mail. See current fees and maximum amounts.
All 4 locations in San Antonio
Sorted by ZIP code.
CPU Fischers Nbrhd Mkt 33
Contract Postal Unit
Mon-Sun 6:00am - 8:00pm
Los Jardines
Post Office
Mon-Fri 8:30am - 5:00pm, Sat 8:30am - 12:00pm, Sun Closed
Heritage
Post Office
Mon-Fri 8:00am - 5:30pm, Sat 8:00am - 1:00pm, Sun Closed
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Need to receive mail without a fixed address? See how to address it for General Delivery and find a post office that offers it.
Learn more →Post Office Holiday Schedule
Post offices close for all federal holidays, affecting both retail service and mail delivery. See this year's full holiday schedule so you can plan ahead.
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