Why do most people in South Australia live near the southern coast?

Most of the population in South Australia is concentrated along the southern coast primarily because the state’s interior is extremely arid and inhospitable to permanent settlement.12

While South Australia is the driest state in Australia, the southern coastal zone benefits from a Mediterranean climate, characterized by mild, wet winters and hot, dry summers. This region receives significantly higher annual precipitation compared to the arid interior, where rainfall is highly erratic. Consequently, the southern fringe consists of well-watered, fertile lands that support intensive agriculture, including dairy, fruit, and vegetable farming, as well as established wine-producing regions.342

Historically, European settlers identified these southern reaches as the most viable areas for colonization, leading to the establishment of the capital, Adelaide, and the development of the state's economic heartland in this coastal zone. Today, approximately three-fourths of the state's total population resides in the metropolitan Adelaide area.1254