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  • In July 2001, the Thornton Recreation Center was renamed Margaret Carpenter Recreation Center. 
  • In 2000, the city’s population is just reaching 80,000 and is 27.2 square miles in size.
  • In August 2002, E-470 was extended from E-470 to Hwy 85.
  • 2002-2003 the community faces a drought.
  • January 3, 2003, the Northwest Parkway Interchange was completed.
  • In 2003, Thornton signed a water agreement with the City of Aurora.
  • December 2003, a additional free community festival called WinterFest was held.
  • In 2004, the Columbine Treatment Plant was upgraded.
  • September 2004, the City launches ambulance service.
  • November 2004, the Thornton Justice Center was completed for the Police Department and Municipal Courts.
  • July 21, 2004, I-25 & 136th Ave. Interchange opens.
  • In 2005, Larkridge, the largest northern area retail center at 963,000 square feet officially opened.
  • April 2005, the North Washington Subarea Plan was adopted as an amendment to the Comprehensive Plan.
  • February 28, 2006 the City Council passed a resolution renaming the Columbine Water Treatment Plant to the Wes Brown Water Treatment Plant.

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City of Thornton
9500 Civic Center Drive, Thornton, CO 80229
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