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Where 83121 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 83121 into a pocket calculator and turn it upside down: IZIEB — not quite a word, sorry.
- ➕ As a number, 83,121 = 3 × 103 × 269. Its digits add up to 15, a total 1,657 other ZIP codes share.
- 💾In binary, the way a computer stores it:
10100010010110001 - 🏠 Its numerical neighbours: 83120 (Freedom, WY, 92 mi away) and 83122 (Grover, WY, 70 mi away).
- 🔄 Backwards, 83121 becomes 12138 — and that is a real ZIP code: Petersburg, NY, 1,885 miles away.
- 👥 23 other ZIP codes are made of exactly the same digits (11238, 12138, 12183, 12831, 13218, 13812, …). The farthest-flung twin is 11238 in Brooklyn, NY, 1,887 miles away.
- 🧭 Farther north than 74% of all ZIP codes, and farther west than 86%.
- 🎯640 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 83121 and you would come out at 41.85°S, 69.46°E — 519 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 13m of daylight. Shortest: 9h 08m.
- 📏 At 2.9 square miles of land, 83121 is bigger than 14% of ZIP codes — room for about 2.2 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 0 |
|---|---|
| Households | 0 |
| Housing units | 0 |
| Population density | 0.0 / sq mi |
Land area
| Land area | 2.91 sq miThis ZIP2.91 sq mi |
|---|---|
| Water area | 0.00 sq mi |
Other place names in 83121
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 83121
| ZIP | City | Distance |
|---|---|---|
83116 | Diamondville, WY | 6.3 mi |
83101 | Kemmerer, WY | 8.8 mi |
83124 | Opal, WY | 13.2 mi |
83114 | Cokeville, WY | 27.6 mi |
83123 | La Barge, WY | 30.2 mi |
84064 | Randolph, UT | 31.6 mi |
82934 | Granger, WY | 32.5 mi |
84038 | Laketown, UT | 37.3 mi |
82937 | Lyman, WY | 37.5 mi |
82929 | Little America, WY | 39.7 mi |
Find every ZIP code within 10 miles of 83121 →
Questions about this ZIP code
Where is ZIP code 83121?
83121 is in Frontier, Wyoming, in Lincoln County. Its published point location is 41.8499, -110.5403.
What county is 83121 in?
83121 lies in Lincoln County.
What area code is 83121?
Frontier uses area code 307, from NANPA's telephone records.
What time zone is 83121 in?
83121 uses America/Denver.
How many people live in 83121?
About 0 people live in ZIP code 83121. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.
What ZIP codes are near 83121?
The closest are 83116 (6.3 mi), 83101 (8.8 mi), 83124 (13.2 mi), 83114 (27.6 mi) and 83123 (30.2 mi).
Is 83121 a PO Box ZIP code?
83121 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “83121 ZIP Code — Frontier, Wyoming (Lincoln County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/83121
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/83121.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.