Texas State Comptroller's Office provides economic and statistical reports:
Texas Economy http://www.thetexaseconomy.org/
Texas Ahead http://texasahead.org
Texas Ahead/Run Report http://texasahead.org/texasedge/run_report.php
(run the report on Denton County).
Texas State Data Center provides population estimates and projections for Texas, as well as other information from the federal government, state government, and other sources. http://txsdc.utsa.edu/
U.S. Census Bureau provides economic and statistical reports. http://www.census.gov/