Longmont ZIP Code List — Boulder County, CO

There are 4 unique ZIP codes in Longmont, Colorado. Area code: 720/303.

ZIP codes

198.94

sq mi land

8.30

sq mi water

720/303

area code

Longmont, CO ZIP code map

About Longmont, CO

Longmont, Colorado, is a vibrant city located in Boulder County. Known for its picturesque surroundings and a strong sense of community, Longmont boasts a range of outdoor recreational opportunities. With a unique blend of small-town charm and urban amenities, it attracts residents and visitors alike.

Location & geography

Geographically, Longmont is situated just 15 miles northeast of Boulder and approximately 33 miles northwest of Denver. The city covers a land area of 196.11 square miles and includes 6.24 square miles of water, making it spacious and accommodating. The terrain is characterized by its scenic views of the Rocky Mountains and ample open spaces, perfect for outdoor activities.

Community & economy

Longmont's community is known for its welcoming atmosphere and active participation in local events. The city has a diverse economy, with key industries including technology, manufacturing, and agriculture, contributing to a robust job market. Daily life in Longmont often involves engaging in community events, exploring local cafes, and enjoying numerous parks and recreational areas.

Transportation

Longmont is accessible via several major highways, including U.S. Route 287 and Colorado State Highway 119, facilitating smooth travel throughout the region. The nearest major airport is Denver International Airport, located approximately 45 miles to the southeast, while local transit options connect residents to neighboring areas. Public transportation services are also available, enhancing mobility within the city.

History

Founded in 1871 as a agricultural community, Longmont quickly evolved into a center for industry and commerce in Boulder County. The city is notable for its historical significance in the sugar beet industry, which played a crucial role in its early economic development. Additionally, Longmont has seen numerous technological advancements over the years, solidifying its reputation as a forward-thinking community.

Did you know?

A surprising fact about Longmont is that it was one of the first cities in the nation to develop a municipal electric utility. Additionally, the city features a thriving craft beer scene with several local breweries that contribute to its vibrant culture.

ZIP codes for Longmont, CO (4)

ZIP code	City	County	Map
80501	Longmont	Boulder	View map
80502	Longmont	Boulder	View map
80503	Longmont	Boulder	View map
80504	Longmont	Weld	View map

Demographics & statistics

139,984

Population

39.9

Median age

$100,221

Median household income

$48,162

Per capita income

$529,633

Median home value

$1,702

Median monthly rent

69.0%

Home ownership

6.6%

Poverty rate

4.1%

Unemployment

40,260

Housing units

46.7%

Bachelor's or higher

Age distribution

Male Female

3,658

Under 5

3,620

3,834

5–9

3,793

4,424

10–14

4,378

4,908

15–19

4,857

3,888

20–24

3,846

9,721

25–34

9,618

9,568

35–44

9,468

8,987

45–54

8,893

5,113

55–59

5,060

4,663

60–64

4,613

7,209

65–74

7,133

3,027

75–84

2,995

1,362

85+

1,348

← Male

Female →

Age summary

Group	Count	%
Under 18	29,714	21.0%
18 and over	110,270	79.0%
65 and over	23,074	16.6%
Median age	39.9 years

Race & ethnicity

White 73.7%

Hispanic or Latino 9.9%

Two or more races 8.2%

Other race 4.5%

Asian 2.4%

Black or African American 0.9%

American Indian / Alaska Native 0.4%

Group	Count	%
White	114,409	73.7%
Hispanic or Latino	15,302	9.9%
Two or more races	12,658	8.2%
Other race	7,034	4.5%
Asian	3,778	2.4%
Black or African American	1,395	0.9%
American Indian / Alaska Native	655	0.4%

Household income

Under $10k 3.3%

$10k–$15k 2.0%

$15k–$25k 4.7%

$25k–$35k 4.6%

$35k–$50k 9.3%

$50k–$75k 13.0%

$75k–$100k 13.6%

$100k–$150k 22.2%

$150k–$200k 11.9%

$200k+ 15.4%

Range	% of households
Under $10k	3.3%
$10k–$15k	2.0%
$15k–$25k	4.7%
$25k–$35k	4.6%
$35k–$50k	9.3%
$50k–$75k	13.0%
$75k–$100k	13.6%
$100k–$150k	22.2%
$150k–$200k	11.9%
$200k+	15.4%
Median income	$100,221

Housing

Home values

Under $50k 2.3%

$50k–$100k 1.7%

$100k–$150k 1.1%

$150k–$200k 0.7%

$200k–$300k 3.8%

$300k–$500k 38.6%

$500k–$1M 43.6%

$1M+ 8.1%

Housing overview

Metric	Value
Median home value	$529,633
Median rent / month	$1,702
Owner occupied	69.0%
Renter occupied	31.0%
Vacant	3.6%
Single-family detached	67.2%
Large apartment buildings	7.6%
Mobile homes	3.2%
Median rooms	6.3
Avg household size (owned)	2.61

Year built

Era	%
2020 or later	0.9%
2010–2019	13.6%
2000–2009	20.5%
1990–1999	17.4%
1980–1989	12.8%
1970–1979	18.0%
1960–1969	7.5%
1950–1959	3.4%
1940–1949	1.2%
1939 or earlier	4.6%

Bedrooms

Size	% of units
No bedroom (studio)	1.8%
1 bedroom	8.4%
2 bedrooms	21.0%
3 bedrooms	35.4%
4 bedrooms	22.8%
5+ bedrooms	10.4%

Vehicles per household

Vehicles	% of households
No vehicle	4.1%
1 vehicle	28.7%
2 vehicles	39.5%
3 or more	27.7%

Heating fuel

Fuel type	%
Utility gas	78.1%
Electricity	18.8%
Propane / LP gas	2.1%
Wood	0.2%
Solar	0.2%
No fuel used	0.2%

Households & families

Household type	Count	%
Married-couple family	28,398	51.2%
Cohabiting couple	4,392	8.0%
Male householder, no spouse	9,584	17.9%
Female householder, no spouse	12,287	22.8%
Households with children under 18	16,419	29.7%
Households with seniors (65+)	16,375	30.0%
Average household size	2.52

Marital status

Status	Male	Female
Never married	33.7%	27.3%
Married	52.2%	50.6%
Separated	1.0%	1.1%
Widowed	2.1%	7.5%
Divorced	11.0%	13.6%

Education

Less than 9th grade 2.9%

Some HS, no diploma 3.9%

HS graduate 17.5%

Some college, no degree 20.0%

Associate's degree 9.0%

Bachelor's degree 29.6%

Graduate / professional 17.1%

Metric	%
HS diploma or higher	93.2%
Bachelor's or higher	46.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	2,370	7.2%
Kindergarten	1,519	4.7%
Elementary school	12,945	39.9%
High school	8,194	26.2%
College / grad school	7,125	22.0%

Employment

Industry of employment

Education & healthcare 20.5%

Professional & management 17.9%

Manufacturing 12.5%

Retail trade 10.9%

Arts, food & hospitality 7.7%

Construction 7.2%

Other services 5.4%

Finance & real estate 4.6%

Transportation & utilities 3.9%

Public administration 3.8%

Wholesale trade 2.2%

Information 2.2%

Agriculture & mining 1.3%

Occupation

Category	%
Management, business & arts	47.8%
Service	14.1%
Sales & office	19.6%
Natural resources & construction	8.1%
Production & transportation	10.5%

Employment type

Type	%
Private sector	79.5%
Government	13.6%
Self-employed	6.7%
Unpaid family workers	0.1%

Commute

Method	%
Drive alone	69.0%
Carpool	7.8%
Public transit	1.7%
Walk	1.4%
Other means	1.6%
Avg commute (minutes)	26.3

Poverty

All people 6.6%

Under 18 years 6.5%

18 and over 6.6%

Married-couple families 1.8%

Female-led households 15.8%

Income support

Source	% of households
Social Security	27.3%
Retirement income	23.6%
Supplemental Security	3.1%
Cash public assistance	3.0%
Food stamps / SNAP	7.4%

Health indicators

Condition	%
High blood pressure	23.0%
High cholesterol	29.0%
Heart disease	4.9%
Stroke	2.3%
Asthma	9.7%
Arthritis	19.3%
Kidney disease	2.3%
Pulmonary disease	4.9%
Cancer	6.3%

Behavior / access	%
Binge drinking	18.6%
No physical activity	14.9%
Less than 7 hrs sleep	25.6%
Fair or poor health	9.9%
Poor mental health	13.3%
Poor physical health	8.3%
No health insurance	12.6%
Visited doctor (checkup)	65.5%
Visited dentist	69.2%
Cholesterol screening	90.5%
Teeth loss	9.0%

Veterans & disability

Veterans	Count	%
Civilian veterans	8,342	7.3%

Disability	%
Any disability	10.6%
Under 18	3.1%
18–64 years	7.9%
65 and over	30.4%

Health insurance coverage

Type	%
Private insurance	74.5%
Public insurance	31.6%
Uninsured under 19	3.7%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	132,706	95.1%
Spanish	5,993	4.6%
Other Indo-European	4,468	3.4%
Asian & Pacific Islander	525	0.4%
Other languages	848	0.7%

Place of birth & citizenship

Origin	Count	%
Native born (US)	127,401	90.8%
Born in same state	124,896	89.0%
Born in different state	54,427	38.0%
Foreign born	2,505	1.8%
Naturalized citizen	12,583	9.2%
Not a US citizen	6,228	50.8%

Ancestry

Ancestry	Count	%
French	19,015	13.6%
Italian	16,076	11.5%
Arab	4,963	3.5%
Polish	3,163	2.3%
English	2,344	1.7%

Ancestry	Count	%
Dutch	1,281	0.9%
German	698	0.5%
Irish	619	0.4%
Norwegian	448	0.3%

Technology access

Metric	% of households
Computer access	39.5%
Internet access	96.8%

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

Frequently asked questions

What ZIP codes does Longmont, CO have?

Longmont, CO has 8 ZIP codes: 80501, 80503, 80503, 80504, 80504, 80504, 80504, 80504. Each ZIP code serves a distinct delivery area within the city and surrounding region.

What is the main ZIP code for Longmont, CO?

The primary ZIP code for Longmont, CO is 80504. The city uses area code 720 or 303 for phone service.

What county is Longmont, CO in?

Longmont is located in Weld County, Colorado.

How many ZIP codes are in Longmont, CO?

Longmont, CO has 8 ZIP codes.

What ZIP code is the downtown Longmont area located in?

Downtown Longmont is primarily located in the 80501 ZIP code, which covers the historic city center and Main Street corridor.

Which ZIP codes serve the University of Colorado Boulder campus area nearest to Longmont?

While CU Boulder is in Boulder, Longmont residents in the northern parts of the city near the Boulder border are served by ZIP codes 80503 and 80504, which are closest to that area.