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zipcodes.pro — ZIP/81120

81120

ZIP 81120 is Antonito, Colorado, mostly in Conejos County; area code 719; Mountain time.

Type
Standard
Time zone
America/Denver
County
Conejos +1 more
Metro area
Alamosa, CO
Population
1,832
Coordinates
37.1953, -106.3494
☼ Live from 81120 — Antonito, CO

Weather right now

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Local time: —

Where 81120 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 81120
  • 🔢 Type 81120 into a pocket calculator and turn it upside down: OZIIB — not quite a word, sorry.
  • ➕ As a number, 81,120 = 2 × 2 × 2 × 2 × 2 × 3 × 5 × 13 × 13. Its digits add up to 12, a total 940 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10011110011100000
  • 🏠 Its numerical neighbours: 81102 (Alamosa, CO, 32 mi away) and 81121 (Arboles, CO, 60 mi away).
  • 🔄 Backwards, 81120 becomes 02118 — and that is a real ZIP code: Boston, MA, 1,893 miles away.
  • 👥 34 other ZIP codes are made of exactly the same digits (01128, 01812, 01821, 02118, 10128, 10281, …). The farthest-flung twin is 02118 in Boston, MA, 1,893 miles away.
  • 🧭 Farther south than 63% of all ZIP codes, and farther west than 84%.
  • 🎯458 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 81120 and you would come out at 37.20°S, 73.65°E — 857 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 43m of daylight. Shortest: 9h 36m.
  • 📏 At 893.5 square miles of land, 81120 is bigger than 99% of ZIP codes — room for about 678 Central Parks.
🌙 The sky over 81120 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population1,832This ZIP1,832
Households887This ZIP887
Housing units1,636This ZIP1,636
Median age51.9This ZIP51.9Colorado37.7US 38.9
Median household income$47,546This ZIP$47,546Colorado$95,470US $80,734
Median home value$188,200This ZIP$188,200Colorado$539,400US $332,700
Median gross rent$813This ZIP$813Colorado$1,761US $1,413
Bachelor's degree or higher20.9%This ZIP20.9%
Mean commute23.7 minThis ZIP23.7 min
Population density2.1 / sq miThis ZIP2.1 / sq mi

Business and tax activity

Business establishments35This ZIP35
Employees239This ZIP239
Annual payroll$12,526,000This ZIP$12,526,000
Tax returns filed860This ZIP860
Total adjusted gross income$46,325,000This ZIP$46,325,000

Land area

Land area893.53 sq miThis ZIP893.53 sq mi
Water area3.32 sq miThis ZIP3.32 sq mi

Counties 81120 spans

A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.

CountyShare of this ZIP
Conejos County 92.1%
Rio Arriba County 7.9%

Other place names in 81120

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 81120

ZIPCityDistance
81140 La Jara, CO 12.6 mi
81124 Capulin, CO 14.7 mi
81128 Chromo, CO 17.0 mi
81129 Conejos, CO 19.1 mi
81148 Romeo, CO 20.1 mi
81141 Manassa, CO 25.2 mi
87520 Chama, NM 26.9 mi
81144 Monte Vista, CO 27.3 mi
81135 Homelake, CO 29.7 mi
81102 Alamosa, CO 32.2 mi

Find every ZIP code within 10 miles of 81120 →

Questions about this ZIP code

Where is ZIP code 81120?

81120 is in Antonito, Colorado, in Conejos County, part of the Alamosa, CO micropolitan area. Its published point location is 37.1953, -106.3494.

What county is 81120 in?

81120 spans 2 counties: Conejos County and Rio Arriba County. Most of it falls in Conejos 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 81120?

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

What time zone is 81120 in?

81120 uses America/Denver.

How many people live in 81120?

About 1,832 people live in ZIP code 81120, in 887 households, at 2.1 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 81120?

$47,546 a year, against $95,470 across Colorado.

What ZIP codes are near 81120?

The closest are 81140 (12.6 mi), 81124 (14.7 mi), 81128 (17 mi), 81129 (19.1 mi) and 81148 (20.1 mi).

Is 81120 a PO Box ZIP code?

81120 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “81120 ZIP Code — Antonito, Colorado (Conejos County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/81120

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