Basalt is a town in Eagle County, Colorado, home to about 4,335 people across 2.0 square miles. Its ZIP code is 81621.
Homes sold for a median of $1,250 per square foot in the three months ending August 2026, a buyer’s market.
Each card is that ZIP code’s whole market, including any part outside Basalt. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Basalt’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Denver International Airport (DEN)129 miles away |
|---|---|
| Closer regional airport | Aspen-Pitkin County Airport (Sardy Field) (ASE)11 miles away |
| Nearest city of 250,000+ | Denver, CO116 miles away |
| Nearest city of 1 million+ | Phoenix, AZ489 miles away |
Straight-line distances from the center of Basalt; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Basalt had 3,984 residents in the 2020 census, up 49% since 2000.
It’s the 125th largest of 472 towns in Colorado by population.
Eagle County grew from 3,008 residents in 1900 to 55,731 in 2020.
Eagle County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 82°F in summer, and winter lows average 9°F. About 14.8 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Aspen Pitkin Co Ap, CO weather station (11 miles away).
36,282 jobs at 3,664 businesses in Eagle County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
111 doctors and other health care providers list an office in Basalt.
Nearest hospitals
Providers with an office here
| Primary care doctors | 8 |
|---|---|
| Specialist doctors | 11 |
| Dentists | 11 |
| Nurse practitioners and physician assistants | 17 |
| Mental health providers | 36 |
| Physical and occupational therapists | 18 |
| Optometrists | 3 |
| Chiropractors | 7 |
| Pharmacies | 1 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Grocery stores
Counts are within about 1 mile of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Roaring Fork School District No. Re-1. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Basalt Elementary SchoolBasalt | Pre-K–4 | 539 | Public | 2.0 mi |
| Basalt Middle SchoolBasalt | 5–8 | 367 | Public | 1.8 mi |
| Basalt High SchoolBasalt | 9–12 | 414 | Public | 2.1 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Cornerstone Christian SchoolBasalt | K–8 | 41 | Christian (no specific denomination) | 4.4 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.