There are 5 United States Postal Service post boxes available to the public in Rio Oso, CA. You can use any one of these locations to mail your letter or small package. For additional collection boxes in neighboring communities, see the list of post boxes in California.

Are you looking for a post office? See the list of post offices in Rio Oso, CA.

Public Collection Box
2156 Rio Oso Rd
Directions
Mailbox in Post Office Lobby
2145 Rio Oso Rd
Directions
Walgreens
2293 River Oaks Blvd
Directions
Mailbox in Post Office Lobby
2900 Garden Hwy
Directions
Public Collection Box
404 4 Th St
Directions