Thornton, Colorado Population 2019

The city of Thornton is a home rule municipality located in Colorado. Situated in Weld and Adams counties, and the northeast region of the Denver-Aurora-Broomfield, CO Metropolitan Statistical Area, Thornton is about 10 miles north-northeast of downtown Denver, the most populous city of Colorado.

Between the years of 2000 and 2010, Thornton saw a 44.2% increase in population, making it the sixth most populous city in the state of Colorado, and the 213th most populous in the United States overall. In 2019, the estimated population of Thornton is 137,000.

Demographics

According to the most recent US census information, (https://www.census.gov/quickfacts/thorntoncitycolorado), the racial and ethnic demographics of Thornton, Colorado, breaks down as follows:

  • White: 85.7% (non-Hispanic: 57.6%)
  • Black or African-American 1.8%
  • Asian: 5%
  • American Indian and Alaskan Native: 0.9%
  • Two or more races: 3.4%
  • Hispanic or Latino of any race: 33.4%

Thornton has a population density of 3,817 people per square mile which is higher than average in Colorado. It's also a fairly young city with a median age of 33 compared to the national median age of 38. About 13% of Thornton residents are foreign-born and more than half were born in Colorado.

History

Up until 1953, Thornton consisted exclusively of farmland. A purchase that year by Sam Hoffman saw the planning of the first community in Adams County. It was the first to offer full municipal services from a single tax levy, including services such as free trash pickup and recreation. By the end of 1955, Thornton had over 5000 residents in over 1,200 homes. Thornton was incorporated as a city a year later in 1956.

June of 1981 saw Thornton receiving one of the two most destructive tornados in the Denver metropolitan area’s history, causing damage totaling over $15 million. The second touched down in the nearby Denver suburb of Lakewood. These were followed by three more just 7 years later in 1988.

Population Growth

In 1960, four years after Thornton was incorporated as a city, the population stood at 11,353. The years between 1970 and 1980 saw a huge growth from 13,326 to 42,054, and an annual growth rate of 12.18%. This could be attributed to the annexation of neighboring communities.

As of 2019, the population of Thornton, Colorado stands at 137,000, with a percentage growth of over 1,000% in the 60 years since the city was incorporated in 1956. Colorado is now the 7th fastest-growing state in the U.S. with much of the growth in the Metro Denver area. Since the 1930s, Metro Denver's growth rate has outpaced the national average (http://www.metrodenver.org/do-business/demographics/population/) and this growth has included the area of Thornton.

Thornton Co Demographics

According to the most recent ACS, the racial composition of Thornton Co was:

  • White: 85.72%
  • Asian: 5.00%
  • Two or more races: 3.39%
  • Other race: 3.06%
  • Black or African American: 1.84%
  • Native American: 0.94%
  • Native Hawaiian or Pacific Islander: 0.06%

Thornton, Colorado's estimated population is 136,978 according to the most recent United States census estimates. Thornton, Colorado is the 6th largest city in Colorado based on official 2017 estimates from the US Census Bureau.

The population density is 3796.30 people/mi² (1465.75 people/km²), with a household density of 491.94 people/km² (1274.13 people/mi²).

The overall median age is 33.7 years, 32.5 years for males, and 34.7 years for females. For every 100 females there are 101.7 males.

Based on data from the American Community Survey, in 2017 there were 45,973 households in the city, with an average size of people per household. The homeowner vacancy rate was 1.1%, with a median rent of $1319/month. The median house has 6.1 rooms, and has a value of $262,100.

The median income for households in Thornton, Colorado is $73,517, while the mean household income is $87,115.

Year Population Growth Annual Growth Rate
2017136,9782,1191.57%
2016134,8592,3851.80%
2015132,4742,6692.06%
2014129,8052,4771.95%
2013127,3283,1562.54%
2012124,1722,4712.03%
2011121,7012,3251.95%
2010119,37636,9923.78%
200082,38427,3534.12%
199055,03112,9772.73%
198042,05428,72812.18%
197013,3261,9731.62%
196011,3530.00%

Population by Race

Race Population
White113,412
Asian6,615
Two or More Races4,483
Some Other Race4,044
Black or African American2,436
American Indian and Alaska Native1,246
Native Hawaiian and Other Pacific Islander74

Data via US Census (2017 ACS 5-Year Survey): Table B03002

Thornton Co Population Pyramid 2019

Data via US Census (2017 ACS 5-Year Survey): Table S0101

Thornton Co Median Age

33.7


Total

32.5


Male

34.7


Female

Thornton Co Adults

There are 94,877 adults, (11,431 of whom are seniors) in Thornton Co.

Thornton Co Age Dependency

58.6

Age Dependency Ratio

13.7

Old Age Dependency Ratio

44.9

Child Dependency Ratio

Thornton Co Sex Ratio

Female

65,601

49.58%

Male

66,709

50.42%

Thornton Co Households and Families

Thornton Co Renter vs Owner Occupied by Household Type

Data via US Census (2017 ACS 5-Year Survey): Table S1101

Thornton Co Household Types

Type Owner Renter
Married82.5%17.5%
All70.6%29.4%
Male61.9%38.1%
Non Family56.2%43.8%
Female53.3%46.7%

70.6%

Rate of Home Ownership

Thornton Co Households by Type

Type Count Average Size Owned
All44,2262.9870.6
Married24,3193.6182.5
Non Family11,8891.3856.2
Female5,4273.3453.3
Male2,5913.761.9

3.45

Average Family Size

2.98

Average Household Size

6.9%

Unmarried (Opposite Sex)

0.5%

Unmarried (Same Sex)

Thornton Co Households

Thornton Co Education

Thornton Co Educational Attainment by Sex (over 25)

Education Attained Count Percentage
Less Than 9th Grade4,5635.42%
9th to 12th Grade6,3857.58%
High School Graduate22,94427.25%
Some College19,19722.80%
Associates Degree8,0169.52%
Bachelors Degree16,39519.47%
Graduate Degree6,6897.95%

Thornton Co Educational Attainment by Race

Name Total High School Bachelors
White53,74351,07017,928
Hispanic23,38016,1592,440
Asian4,2173,3601,646
Other Race2,5561,751245
Multiple Races1,7531,617615
Black1,4741,355476
Native American92178595
Islander747425

The highest rate of high school graduation is among islander people with a rate of 100.00%.

The highest rate of bachelors degrees is among islander people with a rate of 39.03%.

Thornton Co Earnings by Educational Attainment

Name Average Male Female
Overall$42,332$50,405$35,984
Less Than High School$27,211$32,500$19,032
High School Grad$36,321$42,739$31,107
Some College$42,130$52,051$35,475
Bachelors Degree$55,537$63,814$46,678
Graduate Degree$66,454$92,545$57,377

$42,332

Average Earnings

$50,405

Average Male

$35,984

Average Female

Thornton Co Language

Thornton Co Language by Age

Thornton Co Language

76.93% of Thornton Co residents speak only English, while 23.07% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 16.97% of the population.

Thornton Co Poverty

Thornton Co Poverty by Race

Name Total In Poverty Poverty Rate
Hispanic43,9476,72715.31%
White75,6503,2254.26%
Other4,04073518.19%
Asian6,6005237.92%
Black2,39836115.05%
Multiple4,4683588.01%
Native1,2321098.85%

8.48%

Overall Poverty Rate

7.52%

Male Poverty Rate

9.46%

Female Poverty Rate

Poverty in Thornton Co

The race most likely to be in poverty in Thornton Co is Other, with 18.19% below the poverty level.

The race least likely to be in poverty in Thornton Co is White, with 4.26% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.23%. Among those working part-time, it was 11.67%, and for those that did not work, the poverty rate was 15.08%.

Thornton Co Poverty Rate by Education

Name Poverty
Less Than High School16.66%
High School7.41%
Some College5.95%
Bachelors or Greater2.25%

Thornton Co Poverty Rate by Employment Status and Sex

Name Poverty
Female Unemployed29.44%
Male Unemployed23.25%
Female Employed5.62%
Male Employed3.52%

Thornton Co Income

Thornton Co Income by Household Type

Name Median Mean
Households$73,517$87,115
Families$80,505$94,002
Married Families$92,588$105,848
Non Families$50,333$61,550

Thornton Co Marital Status

Thornton Co Marital Status

Marriage Rates

52.6%

Overall Marriage Rate

53.1%

Male Marriage Rate

52.1%

Female Marriage Rate

Thornton Co Married by Age and Sex

Thornton Co Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 35-44.

Thornton Co Marital Status by Race


Data via US Census (2017 ACS 5-Year Survey): Table S1201

Thornton Co Veterans

Thornton Co Veterans by War

6,987

Number of Veterans

6,344

Male Veterans

643

Female Veterans

Name Veterans
Vietnam2,191
First Gulf War1,927
Second Gulf War1,329
Korea433
World War II176

Thornton Co Veterans by Age

Name Veterans
35 to 542,286
65 to 741,542
55 to 641,451
75+899
18 to 34809

Thornton Co Veterans by Race

Name Veterans % of Total
White6,1657.53%
Hispanic9833.47%
Black31419.67%
Other1404.68%
Asian1382.82%
Indian11211.34%
2 or More743.08%
Hawaiian4459.46%

Thornton Co Veterans by Education

2.16%

Veteran Poverty Rate

23.45%

Veteran Disability Rate

Thornton Co Employment Status

Thornton Co Employment by Age

73.7%

Labor Force Participation

70.5%

Employment Rate

4.3%

Unemployment Rate

Thornton Co Employment by Race

Thornton Co Employment by Education

Thornton Co Place of Birth

Origin of Non Citizens

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

52.95%

Born in Colorado

87.17%

Native Born

12.83%

Foreign Born

8.15%

Non Citizen

Place of Birth

87.17% of Thornton Co residents were born in the United States, with 52.95% having been born in Colorado. 8.15% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.