List of H2O Wireless Stores in San Marcos, CA Outlet Note Regular Brands H2O Wireless California San Marcos Rating 4.8 based on 100 votes Official Website https://www.h2owirelessnow.com Products Phone Plans Phones Wireless Services NameAddressPhone Name/Address/Phone H2O Wireless outlet - San Marcos 1230 E Mission Rd H2O Wireless outlet - San Marcos 500 W San Marcos Blvd (760) 510-1556 H2O Wireless outlet - San Marcos 567 Grand Ave People Also Viewed