Postmans Ridge is a rural locality in the Lockyer Valley Region, Queensland, Australia.

[1] Rocky Creek forms part of the south-western boundary before flowing through from west to east.

[5][6] The land use is predominantly grazing on native vegetation and rural residential housing with some crop growing.

[7] The locality takes its name from a mailman who was murdered in the early coaching days.

[8] Postman's Ridge State School opened on 4 February 1878 on land provided by Daniel Connole.