The map shows population density for the selected demographic group.
The bar chart shows age distribution within a census tract.
Click on a census tract on the map to see the age distribution for that tract

Streets
Neighborhoods
Census Tracts
Male Female Both

San Francisco
Citywide
Neighborhoods defined by the mayor's office for http://sffind.info/
Data Provided By: City and County of San Francisco Planning Department
Source Link: http://www.sfgov.org
License: Open Data Commons Public Domain Dedication and License
converted to topojson with http://www.mapshaper.org/
with help from http://bost.ocks.org/mike/map/
and http://bl.ocks.org/mbostock/5798874
osm tiles from http://openstreetmap.us/~migurski/vector-datasource/
responsive map from http://eyeseast.github.io/visible-data/2013/08/26/responsive-d3/
census data from http://uscensusbureau.github.io/citysdk