Where Australia's Economy Lives: The Coastal Concentration of Economic Activity

Australia's economic activity is overwhelmingly concentrated along the coastal fringe, particularly the south-eastern and eastern seaboard. This narrow band—home to 85% of the population—generates the vast majority of GDP.

The Five Major Hubs

1. Sydney (NSW) – Financial/services capital; ~$500B GRP; Asia-Pacific HQs.
2. Melbourne (VIC) – Manufacturing, education, culture, tech; ~$450B GRP.
3. Brisbane (QLD) – Resources, construction, logistics gateway; ~$200B GRP.
4. Perth (WA) – Mining/oil/gas HQs, services; ~$180B GRP.
5. Adelaide (SA) – Defence, wine, health, manufacturing; ~$100B GRP.

Why the Coast?

• Climate: Temperate, livable (vs. arid interior).
• Ports: 98% of trade by sea; all capitals are port cities.
• History: Colonial settlement patterns locked in coastal focus.
• Water: Reliable supply for cities, agriculture, industry.
• Agglomeration: Skills, infrastructure, markets self-reinforce.

The interior (Outback) contributes disproportionately via mining (WA, NT, QLD) and agriculture (Murray-Darling Basin)—but employs few people. Policy challenges: regional inequality, infrastructure gaps, climate vulnerability of coastal assets.