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

Thornton Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Thornton includes 63.49% White, 8.46% other race, 5.84% Asian, and smaller percentages for Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White (63.5%)

Two or more races (19.1%)

Other race (8.5%)

Asian (5.8%)

Black or African American (2.2%)

Native American (0.9%)

Native Hawaiian or Pacific Islander (0.0%)

Race
Population
Percentage (of total)
White90,71263.49%
Two or more races27,28019.09%
Other race12,0878.46%
Asian8,3445.84%
Black or African American3,1492.2%
Native American1,2960.91%
Native Hawaiian or Pacific Islander100.01%

Thornton Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Thornton's average per capita income is $57,054. Household income levels show a median of $100,985. The poverty rate stands at 7.3%.

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$126,074$145,015
Families$115,505$132,284
Households$100,985$119,261
Non Families$65,478$77,944

$57,054

Average Income

$100,985

Median Household Income

7.3%

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)