<a href="https://en.wikipedia.org/wiki/Screenshot" class="extiw" title="w:Screenshot">Screenshot</a> from <a href="https://en.wikipedia.org/wiki/OpenStreetMap" class="extiw" title="w:OpenStreetMap">OpenStreetMap (OSM)</a> <a href="https://en.wikipedia.org/wiki/Mapnik" class="extiw" title="w:Mapnik">Mapnik</a> showing the city of <a href="https://en.wikipedia.org/wiki/St._Elmo,_Illinois" class="extiw" title="w:St. Elmo, Illinois">St. Elmo, Illinois, United States</a> with the administrative boundary relation highlighted.  The boundary relation was derived from 2008 <a href="https://en.wikipedia.org/wiki/Topologically_Integrated_Geographic_Encoding_and_Referencing" class="extiw" title="w:Topologically Integrated Geographic Encoding and Referencing">TIGER</a> shapefile data (U.S. government, census-related).
<a href="https://en.wikipedia.org/wiki/user:ceyockey" class="extiw" title="w:user:ceyockey">w:user:ceyockey</a>
CC BY-SA 2.5
OpenStreetMap, specifically the URL <a rel="nofollow" class="external free" href="https://www.openstreetmap.org/?lat=39.0229&amp;lon=-88.8522&amp;zoom=14&amp;layers=B000FTFT&amp;relation=125995">http://www.openstreetmap.org/?lat=39.0229&amp;lon=-88.8522&amp;zoom=14&amp;layers=B000FTFT&amp;relation=125995</a>