Nate Cohn on Twitter: "We should really just replace the US congressional map with ACS PUMA boundaries. A better map, and it makes PUMAs useful. Two birds, one stone.… https://t.co/2zEBJWZXr7"
Evaluating the Age Dimension at the PUMA Level in the Three-Year Estimates from the American Community Survey
US Census: Biking to Work gets a Bump in Philly | Bicycle Coalition of Greater Philadelphia