Collin County Population Estimates Aerial maps of Collin County and the DFW Area Maps of Collin County Precincts and State Districts (As of January 1, 2010) Maps of State election districts (As of 2008 General Election) U.S. Census Quickfacts about Collin County Consumer Price Index and inflation figures Collin County Appraisal District including tax rates for all subdivisions in Collin County Plano/Collin County League of Women Voters Texas Secretary of State- Elections Division Texas Legislative Information Texas Ethics Commission
