This Web application references several data resources, including Colorado Census Tract Socio Demographic Data Dictionary (January 2015), selected variables from 2009-2013 American Community Survey and the 2010 U.S. Census. You'll find data references in pop-up windows. With community surveys and polling, there's always a margin of error to consider. Information about District 49's school, zone and district boundaries is provided by District 49. If you have any questions regarding the contents of this map, or its use, send a note to webhelp@d49.org.