York Post Office, on Avon Terrace in York, Western Australia, is the oldest surviving two storey post and telegraph building in Western Australia, and forms part of the heritage-listed town centre complex with the Court House and Police Station (1895).

The York Post Office was built in response to the town's growing importance as a rural centre and as the town and railway centre closest to the goldfields in the Yilgarn during the initial period of the Western Australian gold rush.

[3] The building is constructed of rough cut local stone and brick with a corrugated iron roof.

[4] Locally quarried stones were carefully selected for each stage of the work and a horse powered block and tackle was used to raise them in a strong box to the upper level.

[8] The weather vane from Solomon Cook's 1852 mill,[a] which was situated on the corner of Avon Terrace and Macartney Street, where the (York Home) hardware store is now situated, was installed on the roof at the York Post Office in the early 1900s (without the cockerel).