An archive of usable .CSV files with KML geography or geo coordinates or KML files for use as building blocks for projects.

Data sets

KML of U.S. 50 states
Chicago-area counties KML
KML of 102 counties in Illinois
KML world time zones
Geocenters of 136 Chicago towns and locations
Chicago ZIP codes KML
KML Chicago census tracts
CSV containing KML data of Chicago ward map
KML Chicago ward map
CSV containing KML data of Chicago community areas

Data portals

Knight Lab’s Census Reporter
Geocommons
City of Chicago data portal
City of Chicago OpenGrid portal
Cook County open data portal
State of Illinois data portal
U.S. Census data
Google public data
Indiana University spatial data portal
Data.gov – federal data
Project Open Data
U.S. open portals on Github
Google Fusion Table U.S. data
Google Earth KML/KMZ global datasets