A car-dependent Perth has been revealed as the Australian city least likely to have its residents cycle or walk to work.

New Census population and employment data, released on Monday, showed four in every five workers in Perth chose to travel to their place of employment by car - the second highest rate in the country.

Perth's workforce continues to rely heavily on cars.

Nationally the figure was 6.5 million people, or close to two in every three people.

Around one in 11 Perth workers caught public transport while only 3.8 per cent of people's sole method of transport to the office was walking or riding their bike.