The United States Postal Service branch at 135 Liverpool Drive in Cardiff-by-the-Sea serves the 92007 ZIP code that covers Encinitas's southernmost coastal community along San Elijo Avenue and Restaurant Row. The branch handles standard mail and package processing, PO box rentals, money orders, and certified-mail services that local businesses route alongside print jobs at nearby Print & Copy House for marketing mailers and bulk shipments. Cardiff-by-the-Sea's 92007 ZIP code distinction from the 92024 code that covers the rest of Encinitas reflects the community's separate postal identity — a distinction that dates to Cardiff's pre-incorporation history before the five districts merged in 1986. Certified and registered mail demand from the 92007 corridor spikes during tax season, when residents and small businesses coordinate IRS filings and state returns through tracked postal channels in tandem with preparers at AccTax America Service Inc along El Camino Real. The Cardiff branch operates as a retail-counter facility with ADA-accessible entrance and parking, NFC mobile payment terminals, and a dedicated outgoing-mail drop accessible outside counter hours.