Home / Public Service And Government / Shipping Or Delivery Service / US Post Office
US Post Office
One of 37 shipping or delivery service listings in San Marcos.
About US Post Office
US Post Office 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. The listing includes a telephone number, an official website. 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. US Post Office has 7,292 listed locations in total; this page covers the San Marcos branch.
- Address
- 420 N Twin Oaks Valley Rd, San Marcos, CA, 92069
- Phone
- (800) 275-8777
- Website
- tools.usps.com
- Social
Questions
Where is US Post Office located?
420 N Twin Oaks Valley Rd, San Marcos, CA, 92069
How do I contact US Post Office?
(800) 275-8777 · https://tools.usps.com/find-location.htm?location=1380635
What type of business is US Post Office?
US Post Office is a shipping or delivery service (public service and government) in San Marcos.
US Post Office branches
US Post Office has 7,292 listed locations. This branch is in San Marcos.
- Kailua Kona96740-2440
- Hilo96720
- Hilo96720
- Laupahoehoe96764-9997
- Kapaau96755-3001
- Kihei96753
- Lanai City96763
- Pukalani96788
- Lahaina96761
- Honolulu96817
Nearby shipping or delivery service
- SAN MARCOSSAN MARCOS0.0 km
- United States Postal ServiceSan 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 Marcos3.3 km
- PostalAnnex+San Marcos3.4 km
- PostalAnnex+San Marcos3.4 km
Cite this page
“US Post Office, 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.