Thanks to their houses, Australians are the richest people in the world, according to the investment bank Credit Suisse.

The fifth annual study by the Swiss bank of global wealth trends found the median Australian adult was worth more than $US225,000 ($258,000) in June, well ahead of the second wealthiest population on this measure, the ­Belgians, at $US173,000.

'Remarkable figures': Property is at the heart of Australia's wealth, Credit Suisse reports.

They were followed by the Italians, French and British, all at around $US110,000.

Only 6 per cent of Australians have wealth below $US10,000, compared with 29 per cent in the United States and 70 per cent for the world as a whole.