Western Australia, as of 2022, has 1,233 nature reserves, of which 826 are named and 407 unnamed. At the time of the last two-yearly Collaborative Australian Protected Areas Database report in 2022, of land in Western Australia was covered by nature reserves, which is 13.23 percent of all protected areas in the state and 3.99 percent of the state overall. Overall, just over 30 percent of Western Australia is covered by protected areas.
Interim Biogeographic Regionalisation for Australia: