Diamond Valley is a rural locality in the Sunshine Coast Region, Queensland, Australia. In the , Diamond Valley had a population of 489 people.
Diamond Valley State School opened on 7 February 1927 and closed in 1936.
In the , Diamond Valley had a population of 489 people.
In the , Diamond Valley had a population of 489 people.
There is a saw mill in Harris Road ().
There are no schools in Diamond Valley. The nearest government primary school is Mooloolah State School in neighbouring Mooloolah Valley to the south-east. The nearest government secondary school is Maleny State High School in Maleny to the south-west.