Which Australian capital city's population enjoys the highest wages? This FACT indicates the percentage of households with a gross weekly income more than $3000 in each Australian city. The average percentage of households with a gross weekly income of more than $3000 across Australia is 16.4 percent. Data collected in the 2016 ABS Census reveals that the city with the highest percentage is Darwin at 30.6 percent. The city with the lowest is Hobart, at 10.9 percent.