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Where 81125 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 81125 into a pocket calculator and turn it upside down: SZIIB — not quite a word, sorry.
- ➕ As a number, 81,125 = 5 × 5 × 5 × 11 × 59. Its digits add up to 17, a total 2,133 other ZIP codes share.
- 💾In binary, the way a computer stores it:
10011110011100101 - 🏠 Its numerical neighbours: 81124 (Capulin, CO, 37 mi away) and 81126 (Chama, CO, 60 mi away).
- 🔄 Backwards, 81125 becomes 52118, which is not a ZIP code at all.
- 👥 27 other ZIP codes are made of exactly the same digits (11582, 12158, 12185, 12518, 12581, 12815, …). The farthest-flung twin is 12185 in Valley Falls, NY, 1,736 miles away.
- 🧭 Farther south than 59% of all ZIP codes, and farther west than 84%.
- 🎯426 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 81125 and you would come out at 37.82°S, 73.93°E — 818 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 14h 47m of daylight. Shortest: 9h 32m.
- 📏 At 262.7 square miles of land, 81125 is bigger than 94% of ZIP codes — room for about 199 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 3,362This ZIP3,362 |
|---|---|
| Households | 1,580This ZIP1,580 |
| Housing units | 1,700This ZIP1,700 |
| Median age | 41.9This ZIP41.9Colorado37.7US 38.9 |
| Median household income | $56,250This ZIP$56,250Colorado$95,470US $80,734 |
| Median home value | $148,700This ZIP$148,700Colorado$539,400US $332,700 |
| Median gross rent | $652This ZIP$652Colorado$1,761US $1,413 |
| Bachelor's degree or higher | 27.4%This ZIP27.4% |
| Mean commute | 15.7 minThis ZIP15.7 min |
| Population density | 12.8 / sq miThis ZIP12.8 / sq mi |
Business and tax activity
| Business establishments | 68This ZIP68 |
|---|---|
| Employees | 538This ZIP538 |
| Annual payroll | $24,659,000This ZIP$24,659,000 |
| Tax returns filed | 1,370This ZIP1,370 |
| Total adjusted gross income | $78,513,000This ZIP$78,513,000 |
Land area
| Land area | 262.68 sq miThis ZIP262.68 sq mi |
|---|---|
| Water area | 0.48 sq miThis ZIP0.48 sq mi |
Counties 81125 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Saguache County | 82.0% |
| Rio Grande County | 16.5% |
| Alamosa County | 1.5% |
Other place names in 81125
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 81125
| ZIP | City | Distance |
|---|---|---|
81136 | Hooper, CO | 15.6 mi |
81135 | Homelake, CO | 16.9 mi |
81144 | Monte Vista, CO | 18.8 mi |
81132 | Del Norte, CO | 20.3 mi |
81131 | Crestone, CO | 21.6 mi |
81149 | Saguache, CO | 24.6 mi |
81146 | Mosca, CO | 25.0 mi |
81102 | Alamosa, CO | 25.9 mi |
81143 | Moffat, CO | 26.3 mi |
81101 | Alamosa, CO | 26.9 mi |
Find every ZIP code within 10 miles of 81125 →
Questions about this ZIP code
Where is ZIP code 81125?
81125 is in Center, Colorado, in Saguache County. Its published point location is 37.8193, -106.0699.
What county is 81125 in?
81125 spans 3 counties: Saguache County, Rio Grande County and Alamosa County. Most of it falls in Saguache 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 81125?
Center uses area code 719, from NANPA's telephone records.
What time zone is 81125 in?
81125 uses America/Denver.
How many people live in 81125?
About 3,362 people live in ZIP code 81125, in 1,580 households, at 12.8 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 81125?
$56,250 a year, against $95,470 across Colorado.
What ZIP codes are near 81125?
The closest are 81136 (15.6 mi), 81135 (16.9 mi), 81144 (18.8 mi), 81132 (20.3 mi) and 81131 (21.6 mi).
Is 81125 a PO Box ZIP code?
81125 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “81125 ZIP Code — Center, Colorado (Saguache County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/81125
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/81125.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.