Author's Note: This is the 11th of a series of posts that explore the class divides across America's largest cities and metros. Using data from the American Community Survey, each post explores the geography of class within a large city and metro area. For a detailed description of methodology, see the first post in the series.
The map above charts the geography of class for the city of San Francisco. The creative class lives in the areas that are shaded in purple, the red areas are primarily service class, and the blue are working class. Each colored space on the map is a Census tract, a small area within a city or county that can be even smaller than a neighborhood.