To determine America’s most educated ZIP codes, 24/7 Wall St. reviewed five-year estimates of the percentage of adults 25 years and over with at least a bachelor’s degree from the U.S. Census ...

To determine America’s least educated ZIP code, 24/7 Wall St. reviewed five-year estimates of the percentage of adults 25 years and over with at least a bachelor’s degree from the U.S. Census ...

Attached to the letter was a map showing Hartland Township with its seven ZIP codes spread across the township's 36 square miles — an area that contains less than 15,000 residents.