Elections: Election Statistics
- 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, 2022)
- Maps of State election districts
- 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
- Texas Secretary of State - Elections Division
- Texas Legislative Information
- Texas Ethics Commission