Colorado · United States
Thornton population
133,451people · latest figure
Thornton has a population of 133,451, making it the 210th largest place we list in United States. It is in Colorado.
Thornton holds under a tenth of one per cent of United States's 349,035,494 people. New York City, the largest place we list there, is 66 times its size. Twenty years earlier the World Gazetteer recorded 104,658, a rise of 28%.
The 2005 figure comes from the World Gazetteer archive restored on this site. The two sources may draw the settlement's boundary differently, so treat the change as indicative rather than exact. Why figures differ.
Thornton is in Colorado, which has 282 recorded places.
Nearby in size
| Place | Region | Population |
|---|---|---|
| Dayton | Ohio | 135,512 |
| Olathe | Kansas | 134,305 |
| Warren | Michigan | 134,056 |
| Carrollton | Texas | 133,168 |
| Charleston | South Carolina | 132,609 |
| Midland | Texas | 132,524 |
All places in United States → · Colorado →
Figures are the latest available in GeoNames (CC BY 4.0), which draws on national censuses of varying dates — treat them as recent, not same-year. Country totals are UN World Population Prospects 2024 (medium variant) where the UN lists the country separately; the handful it reports under a parent state keep a GeoNames figure and are marked as such. Sources & method.