In the 2016 census, Devon Park had a population of 49 people.[6]
In the 2021 census, Devon Park had a population of 55 people.[1]
Education
There are no schools in Devon Park. The nearest government primary schools are Oakey State School in neighbouring Oakey to the south-east and Jondaryan State School in neighbouring Jondaryan to the west. The nearest government secondary school is Oakey State High School, also in Oakey.
Oakey State School 125th celebration : October 22, 1999, Oakey, Qld., 2003{{citation}}: CS1 maint: location missing publisher (link) — includes Gowrie Little Plains School, Aubigny School, Crosshill School, Devon Park State School, Silverleigh State School, Boodua School, Greenwood State School, Kelvinhaugh State School