City of Thornton City of Thornton, 9500 Civic Center Drive, Thornton, CO 80229 Local: (303) 538-7200 [email protected] Visit Website Overview There's always plenty to do in Thornton! Related Articles How to Hygge on Your Colorado Vacation This Winter 17 Best Things to Do in Colorado Garden of the Gods: 6 Fun Things to Do Magical Winter Activities for the Whole Family Q&A With Colorado's Local 'Top Chef' Star: Hosea Rosenberg Q&A With A Colorado Star Chef: Troy Guard