81431
ZIP 81431 is Redvale, Colorado, mostly in San Miguel County; area code 970; Mountain time.
- Type
- Standard
- Time zone
- America/Denver
- County
- San Miguel +1 more
- Metro area
- none
- Population
- 745
- Coordinates
- 38.1435, -108.5141
Weather right now
Asking the National Weather Service…
Where 81431 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 81431 into a pocket calculator and turn it upside down: IEhIB — not quite a word, sorry.
- ➕ As a number, 81,431 = 7 × 11633. Its digits add up to 17, a total 2,133 other ZIP codes share.
- 💾In binary, the way a computer stores it:
10011111000010111 - 🏠 Its numerical neighbours: 81430 (Placerville, CO, 25 mi away) and 81432 (Ridgway, CO, 42 mi away).
- 🔄 Backwards, 81431 becomes 13418 — and that is a real ZIP code: North Brookfield, NY, 1,759 miles away.
- 👥 26 other ZIP codes are made of exactly the same digits (13148, 13418, 13814, 13841, 14138, 14813, …). The farthest-flung twin is 18341 in Minisink Hills, PA, 1,778 miles away.
- 🧭 Farther south than 57% of all ZIP codes, and farther west than 85%.
- 🎯546 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 81431 and you would come out at 38.14°S, 71.49°E — 777 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 14h 49m of daylight. Shortest: 9h 31m.
- 📏 At 133.8 square miles of land, 81431 is bigger than 84% of ZIP codes — room for about 102 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 745This ZIP745 |
|---|---|
| Households | 265This ZIP265 |
| Housing units | 287This ZIP287 |
| Median age | 41.7This ZIP41.7Colorado37.7US 38.9 |
| Median household income | $83,304This ZIP$83,304Colorado$95,470US $80,734 |
| Median home value | $262,500This ZIP$262,500Colorado$539,400US $332,700 |
| Bachelor's degree or higher | 28.8%This ZIP28.8% |
| Mean commute | 27.2 minThis ZIP27.2 min |
| Population density | 5.6 / sq miThis ZIP5.6 / sq mi |
Business and tax activity
| Business establishments | 9This ZIP9 |
|---|---|
| Employees | 12This ZIP12 |
| Annual payroll | $647,000This ZIP$647,000 |
| Tax returns filed | 130This ZIP130 |
| Total adjusted gross income | $7,911,000This ZIP$7,911,000 |
Land area
| Land area | 133.84 sq miThis ZIP133.84 sq mi |
|---|---|
| Water area | 0.01 sq miThis ZIP0.01 sq mi |
Counties 81431 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| San Miguel County | 65.1% |
| Montrose County | 34.9% |
Other place names in 81431
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 81431
| ZIP | City | Distance |
|---|---|---|
81423 | Norwood, CO | 10.4 mi |
81424 | Nucla, CO | 13.9 mi |
81422 | Naturita, CO | 16.1 mi |
81325 | Egnar, CO | 18.9 mi |
81430 | Placerville, CO | 25.1 mi |
81429 | Paradox, CO | 25.8 mi |
81411 | Bedrock, CO | 26.3 mi |
81425 | Olathe, CO | 30.5 mi |
81320 | Cahone, CO | 31.6 mi |
81403 | Montrose, CO | 33.9 mi |
Find every ZIP code within 10 miles of 81431 →
Questions about this ZIP code
Where is ZIP code 81431?
81431 is in Redvale, Colorado, in San Miguel County. Its published point location is 38.1435, -108.5141.
What county is 81431 in?
81431 spans 2 counties: San Miguel County and Montrose County. Most of it falls in San Miguel County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.
What area code is 81431?
Redvale uses area code 970, from NANPA's telephone records.
What time zone is 81431 in?
81431 uses America/Denver.
How many people live in 81431?
About 745 people live in ZIP code 81431, in 265 households, at 5.6 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 81431?
$83,304 a year, against $95,470 across Colorado.
What ZIP codes are near 81431?
The closest are 81423 (10.4 mi), 81424 (13.9 mi), 81422 (16.1 mi), 81325 (18.9 mi) and 81430 (25.1 mi).
Is 81431 a PO Box ZIP code?
81431 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “81431 ZIP Code — Redvale, Colorado (San Miguel County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/81431
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/81431.json Underlying data is public domain or openly licensed — sources, vintages and licences.