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.
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.
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.
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, Colorado's estimated population is 139,436 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 3864.43 people/mi² (1492.06 people/km²).
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 2.98 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.