81631
ZIP 81631 is Eagle, Colorado, in Eagle County; area code 970; Mountain time.
- Type
- Standard
- Time zone
- America/Denver
- County
- Eagle
- Metro area
- Edwards, CO
- Population
- 8,958
- Coordinates
- 39.6265, -106.7713
Weather right now
Asking the National Weather Service…
Where 81631 is
Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.
- 🔢 Type 81631 into a pocket calculator and turn it upside down: IEgIB — not quite a word, sorry.
- ➕ As a number, 81,631 = 11 × 41 × 181. Its digits add up to 19, a total 2,454 other ZIP codes share.
- 💾In binary, the way a computer stores it:
10011111011011111 - 🏠 Its numerical neighbours: 81630 (De Beque, CO, 96 mi away) and 81632 (Edwards, CO, 9 mi away).
- 🔄 Backwards, 81631 becomes 13618 — and that is a real ZIP code: Cape Vincent, NY, 1,589 miles away.
- 👥 20 other ZIP codes are made of exactly the same digits (11368, 11386, 13618, 13681, 13861, 18631, …). The farthest-flung twin is 11368 in Corona, NY, 1,729 miles away.
- 🧭 Farther north than 53% of all ZIP codes, and farther west than 84%.
- 🎯435 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 81631 and you would come out at 39.63°S, 73.23°E — 688 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 14h 58m of daylight. Shortest: 9h 22m.
- 📏 At 220.4 square miles of land, 81631 is bigger than 92% of ZIP codes — room for about 167 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 8,958This ZIP8,958 |
|---|---|
| Households | 3,215This ZIP3,215 |
| Housing units | 3,416This ZIP3,416 |
| Median age | 41.8This ZIP41.8Colorado37.7US 38.9 |
| Median household income | $113,662This ZIP$113,662Colorado$95,470US $80,734 |
| Median home value | $735,800This ZIP$735,800Colorado$539,400US $332,700 |
| Median gross rent | $1,743This ZIP$1,743Colorado$1,761US $1,413 |
| Bachelor's degree or higher | 54.2%This ZIP54.2% |
| Mean commute | 21.1 minThis ZIP21.1 min |
| Population density | 40.6 / sq miThis ZIP40.6 / sq mi |
Business and tax activity
| Business establishments | 572This ZIP572 |
|---|---|
| Employees | 3,131This ZIP3,131 |
| Annual payroll | $188,049,000This ZIP$188,049,000 |
Land area
| Land area | 220.41 sq miThis ZIP220.41 sq mi |
|---|---|
| Water area | 0.55 sq miThis ZIP0.55 sq mi |
Other place names in 81631
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 81631
| ZIP | City | Distance |
|---|---|---|
81632 | Edwards, CO | 8.7 mi |
81655 | Wolcott, CO | 9.9 mi |
81620 | Avon, CO | 14.3 mi |
81658 | Vail, CO | 14.6 mi |
81621 | Basalt, CO | 18.1 mi |
80423 | Bond, CO | 19.0 mi |
81645 | Minturn, CO | 20.4 mi |
81637 | Gypsum, CO | 20.6 mi |
80426 | Burns, CO | 20.8 mi |
81657 | Vail, CO | 23.8 mi |
Find every ZIP code within 10 miles of 81631 →
Questions about this ZIP code
Where is ZIP code 81631?
81631 is in Eagle, Colorado, in Eagle County, part of the Edwards, CO micropolitan area. Its published point location is 39.6265, -106.7713.
What county is 81631 in?
81631 lies in Eagle County.
What area code is 81631?
Eagle uses area code 970, from NANPA's telephone records.
What time zone is 81631 in?
81631 uses America/Denver.
How many people live in 81631?
About 8,958 people live in ZIP code 81631, in 3,215 households, at 40.6 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.
What is the median household income in 81631?
$113,662 a year, against $95,470 across Colorado.
What ZIP codes are near 81631?
The closest are 81632 (8.7 mi), 81655 (9.9 mi), 81620 (14.3 mi), 81658 (14.6 mi) and 81621 (18.1 mi).
Is 81631 a PO Box ZIP code?
81631 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “81631 ZIP Code — Eagle, Colorado (Eagle County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/81631
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/81631.json Underlying data is public domain or openly licensed — sources, vintages and licences.