Skip to main content

UIA Postal Service

The UIA Postal Service (UIAPS) provides mail collection, processing, and delivery services across all communities within the United Islands of Alto. As a federal service, UIAPS operates independently from city government and maintains post offices and collection points throughout the islands.

Services

  • Daily mail delivery to residential and commercial addresses
  • Package delivery and tracking
  • Post office box rentals
  • Certified and registered mail
  • International mail forwarding
  • Money orders

Post Office Locations

LocationAddressHours
Alto Main Post Office500 Federal Way, AltoMon–Fri 8:00 AM – 5:30 PM, Sat 9:00 AM – 12:00 PM
Cape Alto Station2600 Causeway Blvd, Cape AltoMon–Fri 9:00 AM – 5:00 PM
Terminal Island Station60 Port Authority WayMon–Fri 8:30 AM – 4:30 PM
Castleton Federal StationFederal Office Complex, DCMon–Fri 8:00 AM – 5:00 PM

Mail Collection

Blue collection boxes are located throughout the islands. Mail deposited before the posted collection time will be processed the same business day.

Contact