The Hogsmeade Post Office is a building in the all-wizarding village of Hogsmeade that serves as a hub for the Owl Post service. The interior of the post office is filled with shelves that stretch to the ceiling, upon which at least three hundred owls are perched, ranging from tiny Scops owls for local deliveries to large Great Grey Owls for long-distance or international mail. The owls hoot softly from their perches, waiting for assignments. A key feature of the Hogsmeade Post Office is its unique color-coding system, which allows patrons to select an owl based on the urgency of their delivery. Although the specific color-to-speed correlations are not detailed, this system provides a clear and organized method for sending mail. The post office functions as a public service, requiring payment for the use of its owls. The exact founding date of the post office is unknown, but it is an established and essential service within Hogsmeade.
The Hogsmeade Post Office is first mentioned in Harry Potter and the Prisoner of Azkaban, when Ron Weasley suggests using it to send an owl to Harry Potter at Hogwarts to test if he would be allowed on the trip. Its most significant appearance is in Harry Potter and the Order of the Phoenix. During a Hogsmeade visit, Harry Potter uses the post office to send a coded message to his godfather, Sirius Black, regarding the pain in his scar. He chooses the public post office over the Hogwarts Owlery to avoid interception by the High Inquisitor, Dolores Umbridge. Harry pays for a handsome tawny owl to deliver his letter, demonstrating the commercial nature of the service. This act highlights the post office as a crucial and more discreet alternative for communication when Hogwarts is under strict surveillance.