Thornton Flag

Thornton

County:
Adams County
County Seat:
No
Area (mi²):
36.504
State:
Colorado

Thornton is a city located in Adams County, Colorado. Thornton has a 2025 population of 146,746. Thornton is currently growing at a rate of 0.63% annually and its population has increased by 3.21% since the most recent census, which recorded a population of 142,185 in 2020.

The average household income in Thornton is $119,261 with a poverty rate of 7.3%The median age in Thornton is 34.3 years: 33.6 years for males, and 35 years for females.

146.7K
Total Population
4,020
Density (mi²)
912 0.63%
Growth

Thornton Population

Demographics

Economics and Income Statistics

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)