A Washington Post analysis of the group’s data found that nearly 30 million Americans in about 235 counties across 18 states in the contiguous United States, from Texas to New England ...

To find out, take a look at this interactive map created by researchers at the University of California, Berkeley. It provides estimates for all 31,000 ZIP codes, based on everything people ...

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 ...