Post offices in Lake San Marcos, CA

4 locations. Everything in Lake San Marcos.

• PostalAnnex

  Postalannex
  Mon–Fri9 am–5 pmSat10 am–2 pm
• PostalAnnex

  Postalannex

  92009, 3451 Via Montebello

  Mon–Fri9 am–5 pmSat10:30 am–3 pm
• The UPS Store

  UPS
• USPS La Costa

  USPS
  Every dayOpen 24 hours