Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — ZIP/81146

81146

ZIP 81146 is Mosca, Colorado, in Alamosa County; area code 719; Mountain time.

Type
Standard
Time zone
America/Denver
County
Alamosa
Metro area
Alamosa, CO
Population
637
Coordinates
37.6461, -105.6683
☼ Live from 81146 — Mosca, CO

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 81146 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.

★ Weird and wonderful facts about 81146
  • 🔢 Type 81146 into a pocket calculator and turn it upside down: ghIIB — not quite a word, sorry.
  • ➕ As a number, 81,146 = 2 × 13 × 3121. Its digits add up to 20, a total 2,586 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10011110011111010
  • 🏠 Its numerical neighbours: 81144 (Monte Vista, CO, 27 mi away) and 81147 (Pagosa Springs, CO, 82 mi away).
  • 🔄 Backwards, 81146 becomes 64118 — and that is a real ZIP code: Kansas City, MO, 610 miles away.
  • 👥 26 other ZIP codes are made of exactly the same digits (14168, 14618, 14816, 14861, 16148, 16841, …). The farthest-flung twin is 18461 in Starlight, PA, 1,629 miles away.
  • 🧭 Farther south than 60% of all ZIP codes, and farther west than 83%.
  • 🎯411 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 81146 and you would come out at 37.65°S, 74.33°E — 834 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 46m of daylight. Shortest: 9h 33m.
  • 📏 At 279.9 square miles of land, 81146 is bigger than 94% of ZIP codes — room for about 212 Central Parks.
🌙 The sky over 81146 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population637This ZIP637
Households235This ZIP235
Housing units287This ZIP287
Median age32.3This ZIP32.3Colorado37.7US 38.9
Median household income$69,556This ZIP$69,556Colorado$95,470US $80,734
Median home value$232,100This ZIP$232,100Colorado$539,400US $332,700
Median gross rent$805This ZIP$805Colorado$1,761US $1,413
Bachelor's degree or higher37.5%This ZIP37.5%
Mean commute13.3 minThis ZIP13.3 min
Population density2.3 / sq miThis ZIP2.3 / sq mi

Business and tax activity

Business establishments12This ZIP12
Employees67This ZIP67
Annual payroll$3,040,000This ZIP$3,040,000
Tax returns filed320This ZIP320
Total adjusted gross income$22,429,000This ZIP$22,429,000

Land area

Land area279.86 sq miThis ZIP279.86 sq mi
Water area0.05 sq miThis ZIP0.05 sq mi

ZIP codes near 81146

ZIPCityDistance
81136 Hooper, CO 9.4 mi
81131 Crestone, CO 15.2 mi
81101 Alamosa, CO 15.9 mi
81102 Alamosa, CO 16.6 mi
81123 Blanca, CO 17.2 mi
81133 Fort Garland, CO 23.0 mi
81135 Homelake, CO 24.0 mi
81125 Center, CO 25.0 mi
81040 Gardner, CO 25.9 mi
81144 Monte Vista, CO 26.6 mi

Find every ZIP code within 10 miles of 81146 →

Questions about this ZIP code

Where is ZIP code 81146?

81146 is in Mosca, Colorado, in Alamosa County, part of the Alamosa, CO micropolitan area. Its published point location is 37.6461, -105.6683.

What county is 81146 in?

81146 lies in Alamosa County.

What area code is 81146?

Mosca uses area code 719, from NANPA's telephone records.

What time zone is 81146 in?

81146 uses America/Denver.

How many people live in 81146?

About 637 people live in ZIP code 81146, in 235 households, at 2.3 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 81146?

$69,556 a year, against $95,470 across Colorado.

What ZIP codes are near 81146?

The closest are 81136 (9.4 mi), 81131 (15.2 mi), 81101 (15.9 mi), 81102 (16.6 mi) and 81123 (17.2 mi).

Is 81146 a PO Box ZIP code?

81146 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “81146 ZIP Code — Mosca, Colorado (Alamosa County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/81146

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/81146.json

Underlying data is public domain or openly licensed — sources, vintages and licences.