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Where 84521 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 84521 into a pocket calculator and turn it upside down: IZShB — not quite a word, sorry.
- ➕ 84521 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 20, a total 2,586 other ZIP codes share.
- 💾In binary, the way a computer stores it:
10100101000101001 - 🏠 Its numerical neighbours: 84520 (East Carbon, UT, 20 mi away) and 84522 (Emery, UT, 46 mi away).
- 🔄 Backwards, 84521 becomes 12548 — and that is a real ZIP code: Modena, NY, 1,917 miles away.
- 👥 50 other ZIP codes are made of exactly the same digits (12458, 12485, 12548, 12584, 12845, 12854, …). The farthest-flung twin is 12854 in North Granville, NY, 1,942 miles away.
- 🧭 Farther north than 52% of all ZIP codes, and farther west than 86%.
- 🎯648 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 84521 and you would come out at 39.42°S, 69.24°E — 688 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 14h 57m of daylight. Shortest: 9h 23m.
- 📏 At 49.8 square miles of land, 84521 is bigger than 59% of ZIP codes — room for about 38 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 629This ZIP629 |
|---|---|
| Households | 241This ZIP241 |
| Housing units | 259This ZIP259 |
| Median age | 58.3This ZIP58.3Utah32.0US 38.9 |
| Median household income | $49,583This ZIP$49,583Utah$95,166US $80,734 |
| Median home value | $227,900This ZIP$227,900Utah$489,400US $332,700 |
| Median gross rent | $714This ZIP$714Utah$1,496US $1,413 |
| Bachelor's degree or higher | 21.5%This ZIP21.5% |
| Mean commute | 27.4 minThis ZIP27.4 min |
| Population density | 12.6 / sq miThis ZIP12.6 / sq mi |
Business and tax activity
| Tax returns filed | 250This ZIP250 |
|---|---|
| Total adjusted gross income | $14,490,000This ZIP$14,490,000 |
Land area
| Land area | 49.77 sq miThis ZIP49.77 sq mi |
|---|---|
| Water area | 0.53 sq miThis ZIP0.53 sq mi |
Other place names in 84521
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 84521
| ZIP | City | Distance |
|---|---|---|
84518 | Cleveland, UT | 6.4 mi |
84501 | Price, UT | 8.3 mi |
84528 | Huntington, UT | 16.8 mi |
84513 | Castle Dale, UT | 17.1 mi |
84520 | East Carbon, UT | 20.0 mi |
84529 | Kenilworth, UT | 20.4 mi |
84526 | Helper, UT | 21.2 mi |
84539 | Sunnyside, UT | 22.2 mi |
84537 | Orangeville, UT | 23.4 mi |
84516 | Clawson, UT | 25.8 mi |
Find every ZIP code within 10 miles of 84521 →
Questions about this ZIP code
Where is ZIP code 84521?
84521 is in Elmo, Utah, in Emery County. Its published point location is 39.4170, -110.7624.
What county is 84521 in?
84521 lies in Emery County.
What area code is 84521?
Elmo uses area code 435, from NANPA's telephone records.
What time zone is 84521 in?
84521 uses America/Denver.
How many people live in 84521?
About 629 people live in ZIP code 84521, in 241 households, at 12.6 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 84521?
$49,583 a year, against $95,166 across Utah.
What ZIP codes are near 84521?
The closest are 84518 (6.4 mi), 84501 (8.3 mi), 84528 (16.8 mi), 84513 (17.1 mi) and 84520 (20 mi).
Is 84521 a PO Box ZIP code?
84521 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “84521 ZIP Code — Elmo, Utah (Emery County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/84521
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/84521.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.