Number of responses by zip code from the USGS' site from the 2011-11-05 3.2 quake near Piedmont, CA, USA, via Yahoo! Pipes.
Modified http://mbostock.github.com/d3/d3.js?2.5.0 to a secure url
Modified http://mbostock.github.com/d3/d3.geo.js?2.5.0 to a secure url
Modified http://mbostock.github.com/d3/d3.csv.js?2.5.0 to a secure url
https://mbostock.github.com/d3/d3.js?2.5.0
https://mbostock.github.com/d3/d3.geo.js?2.5.0
https://mbostock.github.com/d3/d3.csv.js?2.5.0