Thornton, Colorado
Thornton is a city in Adams County, Colorado, with an estimated population of 144,922 in 2023. It sits at 39.9204, -104.9414 in the America/Denver time zone.
| Field | Value |
|---|---|
| Place name | Thornton |
| Type | city |
| State | Colorado (CO) |
| County | Adams County |
| Population (2023 est.) | 144,922 |
| Land area | 36.50 sq mi (94.54 km²) |
| Coordinates | 39.9204, -104.9414 |
| Time zone | America/Denver |
| ZIP codes | 80241 |
| Telephone area codes | 303, 720 |
This place also extends into Weld County.
ZIP codes and area codes for Thornton
Thornton covers 1 ZIP code: 80241. Telephone area codes serving the area: 303, 720. Browse all ZIP codes in Colorado for the full list.
Where is Thornton?
Thornton is located in Colorado, in Adams County. The coordinates above can be pasted directly into any map service. The nearest indexed places are listed below, which is a useful check when two states share a place name.
Nearby places
Northglenn 4 km · COFederal Heights 9 km · COBroomfield 10 km · COWestminster 11 km · COCommerce City 13 km · COBrighton 14 km · COErie 16 km · COLafayette 16 km · CO
Other places in Adams County
Westminster 114,875Commerce City 68,245Brighton 42,477Northglenn 38,164Federal Heights 13,943Bennett 3,549
Related
Frequently asked questions
What county is Thornton, CO in?
Thornton is in Adams County, Colorado.
What is the population of Thornton, CO?
The 2023 Census Bureau estimate is 144,922.
What time zone is Thornton in?
Thornton is in the America/Denver time zone.