The Midwest Health Region was established through the amalgamation of the then existing Geraldton, Midwest and Murchison Health Services.
The Midwest region covers an area of over 470,000 square kilometres, nearly a fifth of the State. The population of the region is concentrated along the coast with more than 71% living around Geraldton-Greenough. The region has a high Aboriginal population, and an increasing proportion of aged people. Whilst the population is growing along the coast, the inland population has been declining slightly.