Boulder ZIP Codes — Boulder County, CO

There are 11 unique ZIP codes in Boulder, Colorado. Area code: 303.

ZIP codes

159.82

sq mi land

4.12

sq mi water

303

area code

Boulder, CO ZIP code map

About Boulder, CO

Boulder, Colorado, is a vibrant city nestled at the foothills of the Rocky Mountains. Renowned for its stunning natural beauty and a strong sense of community, Boulder offers a perfect blend of outdoor adventures and urban amenities. It is a destination that attracts residents and tourists alike, thanks to its unique culture and scenic landscapes.

Location & geography

Boulder is located in Boulder County, in the north-central part of Colorado, approximately 25 miles northwest of Denver. The city spans a land area of 159.82 square miles, complemented by a water area of 4.12 square miles. Its diverse terrain features everything from flat plains to mountainous areas, making it a prime spot for various outdoor activities.

Community & economy

The character of Boulder is defined by its commitment to sustainability, health, and innovation, with many residents engaging in eco-friendly practices. Key industries include technology, education, and health services, creating a dynamic economy that supports a thriving community. Daily life in Boulder often revolves around its historical Pearl Street Mall, outdoor recreation, and a plethora of cultural events.

Transportation

Boulder is accessible via several major highways, including U.S. Route 36 and Colorado State Highway 119, which connect it to nearby cities. The nearest airport is the Denver International Airport, located about 45 miles to the southeast, making air travel convenient for residents and visitors. Public transit options are available through the Regional Transportation District, providing easy access within the city and neighboring areas.

History

Boulder was founded in 1858 during the Colorado Gold Rush, initially attracting prospectors and settlers drawn by its natural resources. Over the years, the city has evolved, with key industries shifting from mining to technology and education, anchored by the presence of the University of Colorado Boulder. Notable events include the establishment of the famous Chautauqua Park in 1898, which remains a cherished cultural site today.

Did you know?

One surprising fact about Boulder is that it was the first city in the United States to establish a city-wide pedestrian mall. Additionally, Boulder has consistently ranked as one of the happiest cities in the country, thanks in part to its outdoor lifestyle and community initiatives.

ZIP codes for Boulder, CO (11)

ZIP code	City	County	Map
80301	Boulder	Boulder	View map
80302	Boulder	Boulder	View map
80303	Boulder	Boulder	View map
80304	Boulder	Boulder	View map
80305	Boulder	Boulder	View map
80306	Boulder	Boulder	View map
80307	Boulder	Boulder	View map
80308	Boulder	Boulder	View map
80309	Boulder	Boulder	View map
80310	Boulder	Boulder	View map
80314	Boulder	Boulder	View map

Demographics & statistics

121,924

Population

33.3

Median age

$85,852

Median household income

$63,064

Per capita income

$927,160

Median home value

$1,905

Median monthly rent

53.7%

Home ownership

18.5%

Poverty rate

4.7%

Unemployment

31,828

Housing units

76.5%

Bachelor's or higher

Age distribution

Male Female

1,677

Under 5

1,597

2,181

5–9

2,077

2,492

10–14

2,373

5,033

15–19

4,794

11,247

20–24

10,712

10,015

25–34

9,538

6,862

35–44

6,536

7,160

45–54

6,820

3,212

55–59

3,059

3,182

60–64

3,031

5,619

65–74

5,351

2,558

75–84

2,436

1,210

85+

1,152

← Male

Female →

Age summary

Group	Count	%
Under 18	15,739	13.5%
18 and over	106,185	86.5%
65 and over	18,326	15.1%
Median age	33.3 years

Race & ethnicity

White 80%

Two or more races 6.7%

Hispanic or Latino 5.6%

Asian 4.7%

Other race 1.8%

Black or African American 0.7%

American Indian / Alaska Native 0.5%

Group	Count	%
White	103,314	80%
Two or more races	8,640	6.7%
Hispanic or Latino	7,196	5.6%
Asian	6,065	4.7%
Other race	2,282	1.8%
Black or African American	919	0.7%
American Indian / Alaska Native	661	0.5%

Household income

Under $10k 8.5%

$10k–$15k 3.0%

$15k–$25k 6.4%

$25k–$35k 6.3%

$35k–$50k 8.0%

$50k–$75k 12.0%

$75k–$100k 9.9%

$100k–$150k 14.8%

$150k–$200k 9.3%

$200k+ 21.8%

Range	% of households
Under $10k	8.5%
$10k–$15k	3.0%
$15k–$25k	6.4%
$25k–$35k	6.3%
$35k–$50k	8.0%
$50k–$75k	12.0%
$75k–$100k	9.9%
$100k–$150k	14.8%
$150k–$200k	9.3%
$200k+	21.8%
Median income	$85,852

Housing

Home values

Under $50k 2.5%

$50k–$100k 1.6%

$100k–$150k 0.8%

$150k–$200k 1.1%

$200k–$300k 2.5%

$300k–$500k 8.7%

$500k–$1M 40.8%

$1M+ 41.8%

Housing overview

Metric	Value
Median home value	$927,160
Median rent / month	$1,905
Owner occupied	53.7%
Renter occupied	46.3%
Vacant	5.6%
Single-family detached	46.5%
Large apartment buildings	20.4%
Mobile homes	2.4%
Median rooms	5.1
Avg household size (owned)	2.24

Year built

Era	%
2020 or later	0.4%
2010–2019	7.1%
2000–2009	7.0%
1990–1999	11.9%
1980–1989	16.6%
1970–1979	22.3%
1960–1969	18.1%
1950–1959	8.6%
1940–1949	1.3%
1939 or earlier	6.6%

Bedrooms

Size	% of units
No bedroom (studio)	3.5%
1 bedroom	15.5%
2 bedrooms	28.4%
3 bedrooms	25.1%
4 bedrooms	19.5%
5+ bedrooms	8.1%

Vehicles per household

Vehicles	% of households
No vehicle	7.1%
1 vehicle	37.0%
2 vehicles	37.5%
3 or more	18.4%

Heating fuel

Fuel type	%
Utility gas	64.0%
Electricity	29.7%
Propane / LP gas	3.2%
Fuel oil	0.1%
Wood	0.6%
Solar	1.1%
No fuel used	0.7%

Households & families

Household type	Count	%
Married-couple family	19,232	36.5%
Cohabiting couple	5,103	9.2%
Male householder, no spouse	15,098	27.5%
Female householder, no spouse	14,586	26.8%
Households with children under 18	9,650	18.6%
Households with seniors (65+)	13,526	25.3%
Average household size	2.20

Marital status

Status	Male	Female
Never married	51.7%	45.0%
Married	36.8%	38.9%
Separated	0.8%	0.6%
Widowed	1.5%	4.4%
Divorced	9.1%	11.0%

Education

Less than 9th grade 1.0%

Some HS, no diploma 1.3%

HS graduate 6.1%

Some college, no degree 11.0%

Associate's degree 4.2%

Bachelor's degree 37.0%

Graduate / professional 39.6%

Metric	%
HS diploma or higher	97.7%
Bachelor's or higher	76.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	1,397	4.2%
Kindergarten	812	2.6%
Elementary school	7,526	22.6%
High school	4,847	13.9%
College / grad school	27,067	56.7%

Employment

Industry of employment

Education & healthcare 26.5%

Professional & management 20.7%

Arts, food & hospitality 12.9%

Retail trade 8.3%

Manufacturing 7.6%

Finance & real estate 5.5%

Other services 4.3%

Information 3.3%

Construction 2.9%

Transportation & utilities 2.8%

Public administration 2.7%

Wholesale trade 1.4%

Agriculture & mining 1.1%

Occupation

Category	%
Management, business & arts	61.4%
Service	15.1%
Sales & office	15.6%
Natural resources & construction	2.7%
Production & transportation	5.2%

Employment type

Type	%
Private sector	75.3%
Government	15.7%
Self-employed	8.8%
Unpaid family workers	0.2%

Commute

Method	%
Drive alone	46.5%
Carpool	4.0%
Public transit	5.6%
Walk	7.3%
Other means	8.3%
Avg commute (minutes)	20.3

Poverty

All people 18.5%

Under 18 years 9.4%

18 and over 19.6%

Married-couple families 2.2%

Female-led households 24.4%

Income support

Source	% of households
Social Security	21.6%
Retirement income	19.1%
Supplemental Security	1.4%
Cash public assistance	2.1%
Food stamps / SNAP	4.4%

Health indicators

Condition	%
High blood pressure	19.3%
High cholesterol	25.4%
Heart disease	4.0%
Stroke	1.8%
Asthma	9.8%
Arthritis	15.9%
Kidney disease	2.0%
Pulmonary disease	3.8%
Cancer	5.5%

Behavior / access	%
Binge drinking	20.0%
No physical activity	11.7%
Less than 7 hrs sleep	23.7%
Fair or poor health	7.8%
Poor mental health	13.7%
Poor physical health	6.8%
No health insurance	9.3%
Visited doctor (checkup)	64.5%
Visited dentist	71.7%
Cholesterol screening	87.6%
Teeth loss	6.7%

Veterans & disability

Veterans	Count	%
Civilian veterans	3,508	3.5%

Disability	%
Any disability	7.8%
Under 18	3.6%
18–64 years	6.1%
65 and over	19.1%

Health insurance coverage

Type	%
Private insurance	82.1%
Public insurance	24.4%
Uninsured under 19	1.2%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	118,650	97.2%
Spanish	3,543	2.9%
Other Indo-European	1,561	1.2%
Asian & Pacific Islander	642	0.5%
Other languages	1,257	1.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	110,207	90.5%
Born in same state	108,293	88.8%
Born in different state	34,604	28.5%
Foreign born	1,914	1.6%
Naturalized citizen	11,717	9.5%
Not a US citizen	5,397	47.1%

Ancestry

Ancestry	Count	%
French	15,311	12.6%
Italian	14,459	11.9%
Arab	3,591	2.9%
Polish	2,696	2.2%
English	1,532	1.3%

Ancestry	Count	%
Dutch	1,188	1%
Norwegian	1,166	1%
German	662	0.5%
Irish	638	0.5%

Technology access

Metric	% of households
Computer access	44.3%
Internet access	98.0%

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

Frequently asked questions

What ZIP codes does Boulder, CO have?

Boulder, CO has 8 ZIP codes: 80301, 80302, 80303, 80304, 80305, 80309, 80310, and 80314. Each ZIP code serves a distinct delivery area within the city and surrounding region.