Links that flip when bigger places count more: 23 pairs
The link points one way when every county counts equally, and the other way when every resident counts equally. Both directions are unlikely to be chance. The average county and the average American are different things to study.
Each figure is r: how closely two measures rise and fall together across counties, from −1 (one goes up as the other goes down) to +1 (they rise together). 0 means no link. “After” compares counties alike in population density, household income and the share with a degree. Open a pair for its map, the counties furthest from the trend and the checks behind it.