Migration (internal or external) in Australia
Three sets of maps based on the 2011 Census are below. The first shows the percentage of people in each federal electorate who had changed their usual address in the previous twelve months. This is near a maximum in inner-city electorates and lowest in the outer suburbs. The second set shows the percentage who had changed address in the previous five years; the colour scale moves but there are only minor differences in the colours. The final set shows the percentage of people who weren't at their usual address on Census night, with rural electorates being the highest and outer suburbs the lowest.
Data is from the 2011 Census, via TableBuilder, and I have used the electorate shapefile from the ABS (CED_2011_AUST.shp) to define the boundaries. The ABS's version of the electorates isn't quite the true version from the Electoral Commission, but since the ABS uses their own boundaries for the Census data, it makes sense to use these wrong boundaries.