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 2026 population of 148,938. Thornton is currently growing at a rate of 0.76% annually and its population has increased by 4.75% since the most recent census, which recorded a population of 142,191 in 2020.

The median household income in Thornton is $103,088 with a poverty rate of 7.02%. The median age in Thornton is 34.7 years: 33.9 years for males, and 35.3 years for females. For every 100 females there are 100.0 males.

148.9K
Total Population
4,080
Density (mi²)
1.1K 0.76%
Growth

Thornton Population

Thornton Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026148,9381,1250.76%
2025147,8131,1240.77%
2024146,6891,1560.79%
2023145,5332,0741.45%
2022143,4595170.36%
2021142,9421,0770.76%
2020142,191-4,738-3.22%
2019146,9291,7701.22%
2018145,1592,9752.09%
2017142,1843,7592.72%
2016138,4253,2342.39%
2015135,1913,2462.46%
2014131,9453,2792.55%
2013128,6663,2402.58%
2012125,4263,0192.47%
2011122,4072,8632.39%
2010119,5447720.65%
200082,38427,35349.7%
199055,03112,97730.86%
198042,05428,728215.58%
197013,3261,97317.38%
196011,35300%

Median Age

Overall: 34.7 years
Female: 35.3 years
Male: 33.9 years

Thornton Adults

There are 108,211 adults, (15,590 of whom are seniors) in Thornton.

Sex Ratio

Female: 72,102 (50%)
Male: 72,085 (50%)

Demographics

The racial composition of Thornton includes 58.77% White, 11.19% other race, 5.34% Asian, and smaller percentages for Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White84,74158.77%
Two or more races29,64020.56%
Other race16,13411.19%
Asian7,7025.34%
Black or African American3,4952.42%
Native American2,2571.57%
Native Hawaiian or Pacific Islander2180.15%
Race
Population ↓
Percentage (of total)
Two or more races23,74116.47%
Other race15,52410.77%
White12,3588.57%
Native American1,8841.31%
Black or African American5720.4%
Asian1980.14%
Native Hawaiian or Pacific Islander160.01%
Race
Population ↓
Percentage (of total)
White72,38350.2%
Asian7,5045.2%
Two or more races5,8994.09%
Black or African American2,9232.03%
Other race6100.42%
Native American3730.26%
Native Hawaiian or Pacific Islander2020.14%

Thornton Marital Status

Economics and Income Statistics

Thornton 's average per capita income is $59,385. Household income levels show a median of $103,088. The poverty rate stands at 7.02%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Married Families$130,179$151,431
Families$115,819$136,699
Households$103,088$122,983
Non Families$66,190$79,993

$59,385

Average Income

$103,088

Median Household Income

7.02%

Poverty Rate

Nearby Cities

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)