Basalt ZIP Code List — Eagle County, CO

There is one unique ZIP code in Basalt, Colorado and it is 81621. Area code: 970.

ZIP codes

258.70

sq mi land

2.10

sq mi water

970

area code

Basalt, CO ZIP code map

About Basalt, CO

Basalt is a charming town located in Colorado, situated within the beautiful Eagle County. This picturesque destination is known for its stunning mountain views and vibrant community atmosphere. With a single ZIP code, 81621, Basalt offers a unique blend of outdoor recreation and small-town charm.

Location & geography

Basalt is located in the heart of the Rocky Mountains, approximately 20 miles from Aspen and 30 miles from Glenwood Springs. The town encompasses a land area of 258.70 square miles, with a small water area of 2.10 square miles. This diverse terrain features river valleys and rolling hills, providing residents and visitors alike with breathtaking natural scenery.

Community & economy

The community of Basalt is characterized by its friendly and welcoming atmosphere, attracting individuals who appreciate both outdoor adventures and a relaxed lifestyle. The local economy is supported by a mix of tourism, real estate, and small businesses, which cater to both locals and visitors. Daily life in Basalt often revolves around outdoor activities such as hiking, biking, and fishing, which are popular among both residents and tourists.

Transportation

Basalt is conveniently accessible via State Highway 82, which connects the town to nearby Aspen and Glenwood Springs. The nearest major airport is Aspen/Pitkin County Airport, located approximately 20 miles away, providing both domestic and limited international flights. Public transportation options are available, including Roaring Fork Transit Authority services, which facilitate travel within the region.

History

Basalt was founded in the late 19th century as a mining town, primarily driven by the extraction of coal and other minerals. As the demand for recreation in this picturesque area grew, tourism began to replace mining as the key industry. Notable events in the town's history include the incorporation of Basalt in 1901, reflecting its transition into a vibrant community.

Did you know?

A little-known fact about Basalt is that it is named after the basalt rock formations found in the area, which have geological significance. Additionally, the town is home to a popular arts scene, featuring galleries and events that showcase local artists.

ZIP codes for Basalt, CO (1)

ZIP code	City	County	Map
81621	Basalt	Eagle	View map

Demographics & statistics

5,869

Population

47.3

Median age

$101,786

Median household income

$58,433

Per capita income

$1,106,700

Median home value

$2,150

Median monthly rent

69.5%

Home ownership

8.5%

Poverty rate

2.5%

Unemployment

2,324

Housing units

56.2%

Bachelor's or higher

Age distribution

Male Female

114

Under 5

103

243

5–9

222

139

10–14

126

15–19

20–24

361

25–34

329

458

35–44

417

496

45–54

452

278

55–59

254

192

60–64

175

440

65–74

401

192

75–84

174

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,052	17.9%
18 and over	4,817	82.1%
65 and over	1,258	21.4%
Median age	47.3 years

Race & ethnicity

White 79.1%

Two or more races 10.5%

Hispanic or Latino 9.7%

Asian 0.3%

Black or African American 0.2%

Other race 0.2%

Group	Count	%
White	5,142	79.1%
Two or more races	686	10.5%
Hispanic or Latino	634	9.7%
Asian	21	0.3%
Black or African American	10	0.2%
Other race	10	0.2%

Household income

Under $10k 1.5%

$10k–$15k 3.3%

$15k–$25k 5.1%

$25k–$35k 2.8%

$35k–$50k 6.3%

$50k–$75k 13.8%

$75k–$100k 17.2%

$100k–$150k 20.0%

$150k–$200k 12.0%

$200k+ 18.2%

Range	% of households
Under $10k	1.5%
$10k–$15k	3.3%
$15k–$25k	5.1%
$25k–$35k	2.8%
$35k–$50k	6.3%
$50k–$75k	13.8%
$75k–$100k	17.2%
$100k–$150k	20.0%
$150k–$200k	12.0%
$200k+	18.2%
Median income	$101,786

Housing

Home values

Under $50k 1.0%

$50k–$100k 4.8%

$100k–$150k 0.4%

$200k–$300k 4.6%

$300k–$500k 1.9%

$500k–$1M 25.5%

$1M+ 61.9%

Housing overview

Metric	Value
Median home value	$1,106,700
Median rent / month	$2,150
Owner occupied	69.5%
Renter occupied	30.5%
Vacant	21.6%
Single-family detached	62.5%
Large apartment buildings	7.5%
Mobile homes	3.6%
Median rooms	6.0
Avg household size (owned)	2.49

Year built

Era	%
2020 or later	0.0%
2010–2019	8.6%
2000–2009	19.1%
1990–1999	35.6%
1980–1989	14.0%
1970–1979	8.4%
1960–1969	5.1%
1950–1959	1.8%
1940–1949	2.5%
1939 or earlier	4.9%

Bedrooms

Size	% of units
No bedroom (studio)	1.5%
1 bedroom	8.8%
2 bedrooms	21.7%
3 bedrooms	36.1%
4 bedrooms	30.2%
5+ bedrooms	1.6%

Vehicles per household

Vehicles	% of households
No vehicle	1.3%
1 vehicle	24.4%
2 vehicles	46.5%
3 or more	27.8%

Heating fuel

Fuel type	%
Utility gas	60.9%
Electricity	23.8%
Propane / LP gas	10.6%
Wood	3.5%
Solar	1.2%

Households & families

Household type	Count	%
Married-couple family	1,529	63.8%
Cohabiting couple	117	4.9%
Male householder, no spouse	492	20.5%
Female householder, no spouse	258	10.8%
Households with children under 18	656	27.4%
Households with seniors (65+)	912	38.1%
Average household size	2.45

Marital status

Status	Male	Female
Never married	24.8%	13.5%
Married	56.8%	67.6%
Separated	0.9%	0.0%
Widowed	0.9%	4.3%
Divorced	16.7%	14.6%

Education

Less than 9th grade 0.2%

Some HS, no diploma 1.5%

HS graduate 13.2%

Some college, no degree 21.5%

Associate's degree 7.3%

Bachelor's degree 39.2%

Graduate / professional 17.0%

Metric	%
HS diploma or higher	98.3%
Bachelor's or higher	56.2%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	74	7.4%
Kindergarten	34	3.4%
Elementary school	523	52.0%
High school	131	13.0%
College / grad school	243	24.2%

Employment

Industry of employment

Education & healthcare 23.9%

Retail trade 14.3%

Arts, food & hospitality 13.3%

Professional & management 11.1%

Finance & real estate 8.9%

Construction 8.1%

Transportation & utilities 5.2%

Public administration 4.8%

Other services 4.5%

Agriculture & mining 2.8%

Wholesale trade 2.0%

Information 0.6%

Manufacturing 0.5%

Occupation

Category	%
Management, business & arts	47.9%
Service	17.0%
Sales & office	29.3%
Natural resources & construction	4.5%
Production & transportation	1.3%

Employment type

Type	%
Private sector	79.6%
Government	11.3%
Self-employed	9.0%
Unpaid family workers	0.2%

Commute

Method	%
Drive alone	70.0%
Carpool	7.9%
Public transit	5.7%
Walk	4.1%
Other means	3.2%
Avg commute (minutes)	28.4

Poverty

All people 8.5%

Under 18 years 0.0%

18 and over 10.3%

Married-couple families 2.7%

Female-led households 0.0%

Income support

Source	% of households
Social Security	27.3%
Retirement income	14.9%
Supplemental Security	0.3%
Cash public assistance	1.3%
Food stamps / SNAP	3.0%

Health indicators

Condition	%
High blood pressure	22.7%
High cholesterol	27.2%
Heart disease	4.1%
Stroke	2.0%
Asthma	9.6%
Arthritis	18.2%
Kidney disease	2.1%
Pulmonary disease	4.7%
Cancer	5.1%

Behavior / access	%
Binge drinking	20.4%
No physical activity	15.6%
Less than 7 hrs sleep	27.3%
Fair or poor health	9.8%
Poor mental health	13.4%
Poor physical health	8.2%
No health insurance	13.8%
Visited doctor (checkup)	64.0%
Visited dentist	66.0%
Cholesterol screening	90.0%
Teeth loss	9.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	200	4.2%

Disability	%
Any disability	5.7%
Under 18	3.1%
18–64 years	1.8%
65 and over	18.7%

Health insurance coverage

Type	%
Private insurance	77.3%
Public insurance	25.8%
Uninsured under 19	3.1%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	5,652	96.3%
Spanish	287	5.1%
Other Indo-European	234	4.1%
Asian & Pacific Islander	53	0.9%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	5,329	90.8%
Born in same state	5,109	87.1%
Born in different state	1,489	25.4%
Foreign born	220	3.7%
Naturalized citizen	540	9.2%
Not a US citizen	226	41.9%

Ancestry

Ancestry	Count	%
French	768	13.1%
Italian	421	7.2%
Arab	351	6%
Polish	175	3%

Ancestry	Count	%
English	51	0.9%
German	22	0.4%
Norwegian	14	0.2%
Dutch	13	0.2%

Technology access

Metric	% of households
Computer access	40.8%
Internet access	97.7%

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

Frequently asked questions

What is the ZIP code for Basalt, CO?

Basalt, CO has one ZIP code: 81621.

What is the main ZIP code for Basalt, CO?

The primary ZIP code for Basalt, CO is 81621. The city uses area code 970 for phone service.

What county is Basalt, CO in?

Basalt is located in Eagle County, Colorado.

How many ZIP codes are in Basalt, CO?

Basalt, CO has 1 ZIP code.

What is the ZIP code for downtown Basalt and the surrounding Roaring Fork Valley area?

Downtown Basalt and the surrounding Roaring Fork Valley area are located in ZIP code 81621, which serves as the primary postal code for this mountain community in Eagle County.

If I'm sending mail to a business or residence in Basalt near the Basalt High School area, what ZIP code should I use?

You should use ZIP code 81621 for any addresses in Basalt, including those near Basalt High School and throughout the town's residential and commercial districts.