This feature does not currently work on Google Maps itself but does work when you search Google web search for a zip code such as [10010], which is in Manhattan, New York.

Their map uses U.S. Census data to rank different Zip codes based on how elite their populations are. Percentile rankings for both income and educational attainment were calculated and averaged ...

This is largely because Milwaukee County zip codes were drawn up before the municipality was established in 1950, he said. This means that residents' mail comes to a Milwaukee address, even though ...