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United States Postal Service
One of 37 shipping or delivery service listings in San Marcos.
About United States Postal Service
United States Postal Service is a shipping or delivery service in the public service and government sector, based in San Marcos, CA. Its recorded address is 420 N Twin Oaks Valley Rd, 92069-1709. The listing includes a telephone number, an official website, an email address. It is one of 37 shipping or delivery service listings tracked in San Marcos; the nearest comparable listing is SAN MARCOS, within walking distance in SAN MARCOS. United States Postal Service has 31,861 listed locations in total; this page covers the San Marcos branch.
- Address
- 420 N Twin Oaks Valley Rd, San Marcos, CA, 92069-1709
- Phone
- +18002758777
- Website
- tools.usps.com
- valdezg@usps.com
- Social
Questions
Where is United States Postal Service located?
420 N Twin Oaks Valley Rd, San Marcos, CA, 92069-1709
How do I contact United States Postal Service?
+18002758777 · https://tools.usps.com/find-location.htm?location=1380635
What type of business is United States Postal Service?
United States Postal Service is a shipping or delivery service (public service and government) in San Marcos.
United States Postal Service branches
United States Postal Service has 31,861 listed locations. This branch is in San Marcos.
- Honaunau96726
- Pahoa96778-3001
- Kurtistown96760-3001
- Kailua Kona96740
- Hilo96720-0014
- Pepeekeo96783-8497
- Waikoloa96738-2001
- Ninole96773-9997
- Kamuela96743-3501
- Honokaa96727-7211
Nearby shipping or delivery service
- SAN MARCOSSAN MARCOS0.0 km
- US Post OfficeSan Marcos0.0 km
- FedEx Office Print & Ship CenterSan Marcos0.5 km
- FedEx Office Print & Ship CenterSan Marcos0.5 km
- PostalAnnexSan Marcos0.8 km
- The UPS StoreSan Marcos1.7 km
- UPS Customer CenterSAN MARCOS1.9 km
- UPS Customer CenterSan Marcos2.1 km
- UPS Access Point locationSan Marcos2.3 km
- UPS Authorized Shipping OutletSAN MARCOS2.3 km
- UPS Access Point locationSan Marcos2.5 km
- UPS Authorized Shipping OutletSAN MARCOS3.3 km
- postal annex+San Marcos3.4 km
- PostalAnnex+San Marcos3.4 km
- PostalAnnex+San Marcos3.4 km
Cite this page
“United States Postal Service, San Marcos — business.wiki, retrieved August 2026.” Facts on this page come from openly licensed data (Overture Maps Foundation) and are refreshed with each monthly release; sourcing is documented on the methodology page.