Thornton Population 2026
Thornton has a population of 133,451, making it the #210 biggest city in 🇺🇸 United States, located in Colorado. It is about 66× smaller than New York City, the country's biggest city.
Population (city proper)
133,451
Rank in United States
#210
Coordinates
39.87°N, 104.97°W
~1,631 m elevation · America/Denver
Distance to capital (Washington)
2,394 km
1,487 miles, straight line
Other big cities in Colorado
| City | Population | Rank in United States |
|---|---|---|
| Denver | 729,019 | #19 |
| Colorado Springs | 456,568 | #43 |
| Aurora | 359,407 | #54 |
| Fort Collins | 170,924 | #156 |
| Lakewood | 152,597 | #180 |
| Westminster | 116,317 | #253 |
| Arvada | 115,368 | #256 |
| Centennial | 109,741 | #283 |
Cities near Thornton
- Northglenn39,197 people · ~2 km away
- Westminster116,317 people · ~7 km away
- Commerce City53,696 people · ~7 km away
- Broomfield65,065 people · ~11 km away
- Arvada115,368 people · ~12 km away
- Denver729,019 people · ~14 km away
FAQ
What is the population of Thornton?
Thornton has a population of 133,451 (city proper, latest official figure via GeoNames), making it the #210 biggest city in United States.
What state is Thornton in?
Thornton is located in Colorado, United States.
Is Thornton the capital of United States?
No, the capital of United States is Washington D.C., about 2,394 km away.
Sources & notes
Population refers to the city proper (municipal boundaries), not the metropolitan area. Source: GeoNames (CC BY 4.0), retrieved 2026-07-07. Country data: UN World Population Prospects 2024.
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