The Ocean Beach Post Office is the USPS retail and carrier station serving ZIP 92107-9998 from 4833 Santa Monica Avenue, providing PO Box rental, money orders, Priority Mail, Global Express Guaranteed, business reply mail accounts, and Label Broker print-from-home services. Notarization of documents being mailed certified or registered is typically completed in advance — the Notary Branch office one block away handles short-form acknowledgments and jurats for the same workflow before documents reach the retail counter. The station operates the residential carrier delivery network covering the OB grid and handles general delivery for residents without a fixed mailing address. Bulk-mail business permits and Every Door Direct Mail setup — the workflow used by neighborhood organizations such as the Ocean Beach MainStreet Association for member newsletters and event mailers — are processed at the Window Service counter. This location is not a USPS passport acceptance facility, so passport applications must be submitted at a designated facility elsewhere in San Diego County. The most involved counter transaction is an international Global Express Guaranteed shipment with full customs documentation and money-back delivery-date guarantee for select destination countries.