Thornton ZIP Code List — Adams County, CO

There is one unique ZIP code in Thornton, Colorado and it is 80241. Area code: 303/720.

ZIP codes

6.58

sq mi land

0.25

sq mi water

303/720

area code

Thornton, CO ZIP code map

About Thornton, CO

Thornton is a vibrant city located in Colorado, within the scenic Adams County. With a rich blend of suburban charm and urban amenities, Thornton offers residents a high quality of life. The city has become a popular destination for families and young professionals seeking both tranquility and access to city attractions.

Location & geography

Thornton is situated just north of Denver, providing close proximity to the bustling capital of Colorado. Nearby cities include Northglenn, which is approximately 3 miles to the south, Brighton about 8 miles to the northeast, Westminster around 5 miles to the west, and Aurora roughly 12 miles to the southeast. Spanning a total area of 26.30 square miles, Thornton includes 0.99 square miles of water, contributing to its diverse landscape.

Community & economy

The character of Thornton is defined by its friendly neighborhoods and a strong sense of community. The city hosts various industries, with a focus on retail, healthcare, and education, ensuring a robust local economy. Daily life in Thornton encompasses numerous recreational activities, local events, and a variety of dining and entertainment options that reflect the city's diverse population.

Transportation

Thornton is well-connected by major highways, including Interstate 25, which runs north-south, providing easy access to Denver and beyond. The nearest named airports are Denver International Airport, located about 20 miles to the southeast, making air travel convenient for residents. Local public transportation options are available, enhancing connectivity throughout the area.

History

Founded in the early 1950s, Thornton initially began as a small agricultural community and has since evolved into a thriving residential city. Key industries during its development included agriculture, which eventually transitioned to a more diverse economic base with warehousing and retail. Notable events in its history include the incorporation of the city in 1956, which marked the beginning of its rapid growth.

Did you know?

One surprising fact about Thornton is that it was named after the first mayor of the city, Edwin C. Thornton. Additionally, the city is home to a variety of parks and recreational areas, making it an attractive spot for outdoor enthusiasts.

ZIP codes for Thornton, CO (1)

ZIP code	City	County	Map
80241	Thornton	Adams	View map

Demographics & statistics

33,656

Population

35.5

Median age

$105,565

Median household income

$44,381

Per capita income

$462,300

Median home value

$1,926

Median monthly rent

78.8%

Home ownership

6.8%

Poverty rate

4.7%

Unemployment

9,716

Housing units

39.5%

Bachelor's or higher

Age distribution

Male Female

1,009

Under 5

951

1,130

5–9

1,067

1,373

10–14

1,295

1,365

15–19

1,287

1,068

20–24

1,007

2,573

25–34

2,427

2,744

35–44

2,589

2,087

45–54

1,968

1,101

55–59

1,038

844

60–64

796

1,340

65–74

1,265

610

75–84

575

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	8,598	25.5%
18 and over	25,058	74.5%
65 and over	3,937	11.7%
Median age	35.5 years

Race & ethnicity

White 66.5%

Hispanic or Latino 11.2%

Two or more races 10.6%

Asian 4.6%

Other race 4.1%

Black or African American 1.7%

American Indian / Alaska Native 1.2%

Group	Count	%
White	25,228	66.5%
Hispanic or Latino	4,266	11.2%
Two or more races	4,022	10.6%
Asian	1,740	4.6%
Other race	1,537	4.1%
Black or African American	659	1.7%
American Indian / Alaska Native	464	1.2%

Household income

Under $10k 2.7%

$10k–$15k 0.6%

$15k–$25k 2.9%

$25k–$35k 4.0%

$35k–$50k 6.6%

$50k–$75k 12.8%

$75k–$100k 15.2%

$100k–$150k 25.9%

$150k–$200k 17.0%

$200k+ 12.3%

Range	% of households
Under $10k	2.7%
$10k–$15k	0.6%
$15k–$25k	2.9%
$25k–$35k	4.0%
$35k–$50k	6.6%
$50k–$75k	12.8%
$75k–$100k	15.2%
$100k–$150k	25.9%
$150k–$200k	17.0%
$200k+	12.3%
Median income	$105,565

Housing

Home values

Under $50k 1.0%

$50k–$100k 0.7%

$100k–$150k 0.2%

$150k–$200k 1.1%

$200k–$300k 4.2%

$300k–$500k 55.9%

$500k–$1M 34.7%

$1M+ 2.4%

Housing overview

Metric	Value
Median home value	$462,300
Median rent / month	$1,926
Owner occupied	78.8%
Renter occupied	21.2%
Vacant	3.0%
Single-family detached	66.1%
Large apartment buildings	5.6%
Mobile homes	0.3%
Median rooms	6.5
Avg household size (owned)	2.84

Year built

Era	%
2020 or later	0.2%
2010–2019	7.6%
2000–2009	17.1%
1990–1999	49.2%
1980–1989	19.0%
1970–1979	5.7%
1960–1969	0.2%
1950–1959	0.2%
1940–1949	0.5%
1939 or earlier	0.2%

Bedrooms

Size	% of units
No bedroom (studio)	1.4%
1 bedroom	4.9%
2 bedrooms	18.7%
3 bedrooms	44.9%
4 bedrooms	20.7%
5+ bedrooms	9.5%

Vehicles per household

Vehicles	% of households
No vehicle	2.9%
1 vehicle	22.4%
2 vehicles	38.5%
3 or more	36.2%

Heating fuel

Fuel type	%
Utility gas	72.8%
Electricity	24.5%
Propane / LP gas	1.1%
Wood	0.1%
Solar	1.1%
No fuel used	0.2%

Households & families

Household type	Count	%
Married-couple family	7,127	60.0%
Cohabiting couple	858	7.2%
Male householder, no spouse	1,348	11.4%
Female householder, no spouse	2,538	21.4%
Households with children under 18	4,661	39.3%
Households with seniors (65+)	2,593	21.8%
Average household size	2.81

Marital status

Status	Male	Female
Never married	35.2%	26.5%
Married	55.7%	54.1%
Separated	0.0%	1.0%
Widowed	1.4%	3.5%
Divorced	7.7%	14.9%

Education

Less than 9th grade 1.7%

Some HS, no diploma 6.0%

HS graduate 21.2%

Some college, no degree 20.6%

Associate's degree 11.0%

Bachelor's degree 26.6%

Graduate / professional 12.9%

Metric	%
HS diploma or higher	92.3%
Bachelor's or higher	39.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	626	6.8%
Kindergarten	252	2.7%
Elementary school	4,120	44.5%
High school	2,340	25.3%
College / grad school	1,921	20.7%

Employment

Industry of employment

Education & healthcare 18.9%

Professional & management 12.9%

Retail trade 12.5%

Manufacturing 9.6%

Construction 9.3%

Transportation & utilities 7.1%

Arts, food & hospitality 5.8%

Finance & real estate 5.5%

Public administration 4.8%

Other services 4.7%

Wholesale trade 4.3%

Information 3.7%

Agriculture & mining 0.9%

Occupation

Category	%
Management, business & arts	45.5%
Service	11.0%
Sales & office	23.2%
Natural resources & construction	9.2%
Production & transportation	11.1%

Employment type

Type	%
Private sector	82.1%
Government	12.7%
Self-employed	4.9%
Unpaid family workers	0.3%

Commute

Method	%
Drive alone	74.7%
Carpool	7.1%
Public transit	1.4%
Walk	0.9%
Other means	1.0%
Avg commute (minutes)	31.3

Poverty

All people 6.8%

Under 18 years 9.1%

18 and over 6.0%

Married-couple families 2.8%

Female-led households 13.5%

Income support

Source	% of households
Social Security	20.3%
Retirement income	19.3%
Supplemental Security	2.2%
Cash public assistance	2.6%
Food stamps / SNAP	5.9%

Health indicators

Condition	%
High blood pressure	21.2%
High cholesterol	26.1%
Heart disease	3.7%
Stroke	1.8%
Asthma	10.0%
Arthritis	17.6%
Kidney disease	1.9%
Pulmonary disease	4.3%
Cancer	4.8%

Behavior / access	%
Binge drinking	20.5%
No physical activity	17.1%
Less than 7 hrs sleep	29.6%
Fair or poor health	9.1%
Poor mental health	14.0%
Poor physical health	7.9%
No health insurance	13.3%
Visited doctor (checkup)	62.7%
Visited dentist	70.6%
Cholesterol screening	89.5%
Teeth loss	9.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,989	7.9%

Disability	%
Any disability	7.4%
Under 18	2.3%
18–64 years	5.9%
65 and over	27.7%

Health insurance coverage

Type	%
Private insurance	77.9%
Public insurance	25.8%
Uninsured under 19	4.1%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	31,696	94.2%
Spanish	1,059	3.3%
Other Indo-European	676	2.1%
Asian & Pacific Islander	67	0.2%
Other languages	287	0.9%

Place of birth & citizenship

Origin	Count	%
Native born (US)	31,105	92.4%
Born in same state	30,777	91.4%
Born in different state	18,698	55.6%
Foreign born	328	1.0%
Naturalized citizen	2,551	7.6%
Not a US citizen	1,268	49.7%

Ancestry

Ancestry	Count	%
Italian	3,829	11.4%
French	3,829	11.4%
Arab	1,275	3.8%
Polish	524	1.6%
English	181	0.5%

Ancestry	Count	%
Dutch	150	0.4%
German	87	0.3%
Norwegian	82	0.2%
Irish	69	0.2%

Technology access

Metric	% of households
Computer access	35.3%
Internet access	98.5%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What ZIP codes does Thornton, CO have?

Thornton, CO has 2 ZIP codes: 80241, 80241. Each ZIP code serves a distinct delivery area within the city and surrounding region.

What is the main ZIP code for Thornton, CO?

The primary ZIP code for Thornton, CO is 80241. The city uses area code 303 or 720 for phone service.

What county is Thornton, CO in?

Thornton is located in Adams County, Colorado.

How many ZIP codes are in Thornton, CO?

Thornton, CO has 2 ZIP codes.

What ZIP code covers the downtown Thornton area and the civic center district?

The downtown Thornton area and civic center are located in ZIP code 80241, which serves as the primary commercial and governmental hub of the city.

Which ZIP code includes the Thornton Marketplace shopping area and residential neighborhoods in central Thornton?

Thornton Marketplace and the surrounding residential communities in central Thornton are served by ZIP code 80241.