Residential delivery area · Colorado
ZIP Code 81621: Basalt, CO
ZIP code 81621 uses the postal name Basalt, Colorado and lies mostly in Eagle County (65% of its land) with the rest in Pitkin County (Census 2020 ZIP-county file). About 6,600 people live there (Census Bureau, ACS 2020-2024). Median household income is $104,754 (Census Bureau, ACS 2020-2024). By Census place, under 1% of its land lies in Basalt; more than 99% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2022
- ZBP2023
- IRS2022
- Town
- Basalt · its only residential ZIP
- County
- Eagle County (65%); Pitkin County (35%)
- Census places
- Basalt
- Micro area
- Edwards, CO
- House district
- CO-3 119th Congress
- State
- Colorado
- Time zone
- Mountain
- Land area
- 258.7 sq mi · 25 people per sq mi
Where is ZIP code 81621?
81621 centers on 39.378°, -106.876° and covers 258.7 square miles of land plus 2.1 of water. It borders 7 ZIP codes: 81656, 81654, 81642, 81623, 81631, 81645, 81637.
The map draws ZIP code areas only. For the streets inside 81621, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 81621 compare with the rest of Eagle County?
| Measure | 81621 | In Eagle County | In CO |
|---|---|---|---|
| People (ACS 2020-2024) | 6,550 | 6th of 13 | 205th of 527 |
| Median household income | $105k | 4th of 7 | 100th of 277 |
| Median home value | $1.14M | 1st of 7 | 3rd of 311 |
Its median household income is higher than in 84% of U.S. residential ZIP codes, and it is denser than 30% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 81621?
The 2020 Census counted 6,034 people in 81621; the ACS, which samples households over 2020-2024, estimates 6,550. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 6,550±682 (90% margin)
- 2020 Census count
- 6,034
- Households
- 2,788
- Median age
- 42.2
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 81621?
Of the 6,550 people the ACS estimates in 81621, 17.9% are under 18 and 21.5% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (76.2%), then Hispanic or Latino (18.3%).
- Under 1817.9%
- 18 to 6460.6%
- 65 and older21.5%
- White, not Hispanic76.2%
- Hispanic or Latino18.3%
- Other or two or more4.1%
- Asian, not Hispanic1.2%
- Black, not Hispanic0.2%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 81621 earn?
Median household income is $104,754 (ACS 2020-2024), the 4th highest of the 7 ranked ZIP codes in Eagle County.
- Median household income
- $104,754±$13,814
- Income per person
- $64,753
- Below the poverty line
- 7.9%
- Unemployed (of the labor force)
- 2.7%
- Adults 25+ with a bachelor's degree
- 59.1%
- Adjusted gross income per tax return, 2022
- $147,3683,840 returns; wages 44% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 81621?
- Median home value (owners' estimate)
- $1,136,600
- Median gross rent
- $2,316
- Homes owned by their occupants
- 68.4%
- Housing units
- 3,171
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 81621?
559 business establishments had a location in this ZIP code in 2023, 58 more than in 2018; the most are in professional, scientific, and technical services (ZIP Code Business Patterns).
- Professional, scientific, and technical services96
- Construction94
- Real estate and rental and leasing57
- Retail trade56
- Other services (except public administration)49
- Administrative and support and waste management and remediation services44
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 81621?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 81656 | Woody Creek | 459 | $250k+ | 8.3 mi |
| 81654 | Snowmass | 1,431 | $141k | 15.0 mi |
| 81642 | Meredith | 15 | – | 17.1 mi |
| 81623 | Carbondale | 15,067 | $110k | 17.8 mi |
| 81631 | Eagle | 8,958 | $114k | 18.1 mi |
| 81645 | Minturn | 1,028 | $102k | 22.9 mi |
| 81637 | Gypsum | 10,744 | $109k | 30.2 mi |
| 81615 | Snowmass Village | 2,972 | $103k | 11.9 mi (near) |
| 81611 | Aspen | 9,068 | $83k | 18.8 mi (near) |
| 81632 | Edwards | 10,965 | $84k | 22.2 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.