Thornton, Colorado
Thornton, Colorado | |
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Thornton welcome sign on Interstate 25 | |
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Thornton Location of the City of Thornton, Colorado. Thornton Thornton (Colorado) | |
| Coordinates: 39°52′05″N 104°58′19″W / 39.8680°N 104.9719°W | |
| Country | United States |
| State | Colorado |
| Counties | Adams and Weld |
| Incorporated | June 12, 1956 |
| Named after | Daniel I.J. Thornton |
| Government | |
| • Type | Home rule city |
| • Mayor | Janifer "Jan" Kulmann (Since 2019) |
| • City Manager | Tansy Hayward (Since 2024) |
| Area | |
• Total | 37.947 sq mi (98.282 km2) |
| • Land | 35.924 sq mi (93.043 km2) |
| • Water | 2.023 sq mi (5.239 km2) |
| Elevation | 5,348 ft (1,630 m) |
| Population (2020) | |
• Total | 141,867 |
| • Rank | 6th in Colorado 191st in the United States |
| • Density | 3,949/sq mi (1,525/km2) |
| • Metro | 2,963,821 (19th) |
| • CSA | 3,623,560 (17th) |
| • Front Range | 5,055,344 < |
| Time zone | UTC−07:00 (MST) |
| • Summer (DST) | UTC−06:00 (MDT) |
| ZIP code | Denver 80221, 80229, 80233, 80241, 80260 Brighton 80602 |
| Area codes | 303/720/983 |
| GNIS place ID | 181265 |
| GNIS town ID | 2412064 |
| FIPS code | 08-77290 |
| Major highways | |
| Website | City of Thornton |
Sixth most populous Colorado city | |
Thornton is a home rule city located in Adams and Weld counties, Colorado, United States. The city population was 141,867, all in Adams County, at the 2020 United States census, an increase of 19.44% since the 2010 United States census. Thornton is the sixth-most-populous city in Colorado and the 191st-most-populous city in the United States. Thornton is 10 miles (16 km) north of the Colorado State Capitol in Denver and is a part of the Denver-Aurora-Greeley, CO Combined Statistical Area and the Front Range Urban Corridor.