Ever wondered why Arlington County gets scooped up in “city” rankings so often, despite being technically a county? Turns out it’s by design.
The county is marked as a “Census Designated Place” (CDP) within the U.S. Census, which allows officials to compare it to cities as if the Arlington were one, too. And because data on CDPs and cities are both published in the same level of the federal survey, Arlington gets ranked against other U.S. cities by companies eager to rank everything from parks to bike friendliness.