The park is an important refuge for the threatened fauna and flora of the Wheatbelt region.

[1] European occupation of the area began from 1839, when the Colony of Western Australia commenced a search for coal to support industrial development.

In 1846, surveyor Augustus Charles Gregory, together with his brothers Francis Thomas and Henry Churcham, explored the area and found Western Australia's first coal seam at the banks of the Irwin River.

The area of what is now the Coalseam Conservation Park was unsuitable for both wheat and sheep farming and its value as a retreat for native flora and fauna was eventually recognised.

[1] Coalseam Conservation Park is considered to be one of the most spectacular wildflower areas of the Wheatbelt region of Western Australia, which grow predominantly in winter, with flowers appearing in early spring before dying in late spring, avoiding the harsh summer conditions.