Fig. 2: The geography of social capital in the United States.
From: Social capital I: measurement and associations with economic mobility
a, County-level map of EC, defined as twice the share of friends with above-median SES among people with below-median SES. b, ZIP-code-level map of EC in Los Angeles. c, County-level map of average clustering, defined as the share of an individual’s friend pairs who are friends with each other. d, ZIP-code-level map of average clustering in Los Angeles. e, County-level map of volunteering rates, defined as the percentage of individuals who are members of volunteering or activism groups as classified by Facebook. f, ZIP-code-level map of volunteering rates in Los Angeles. We omit counties and ZIP codes where statistics are estimated on fewer than 100 Facebook users with below-median SES. These maps must be viewed in colour to be interpretable. Analogous maps for all ZIP codes in the United States are available at https://www.socialcapital.org. Extended Data Fig. 1 presents county-level maps of other social capital measures. Maps were made with the QGIS software package.
