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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/84123

84123

ZIP 84123 is in Salt Lake City, Utah, in Salt Lake County; area codes 801 and 385; Mountain time. Salt Lake City has 52 ZIP codes in all.

Type
Standard
Time zone
America/Denver
County
Salt Lake
Population
37,054
Coordinates
40.6584, -111.9217
☼ Live from 84123 — Salt Lake City, UT

Weather right now

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Local time: —

Where 84123 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 84123
  • 🔢 Type 84123 into a pocket calculator and turn it upside down: EZIhB — not quite a word, sorry.
  • ➕ As a number, 84,123 = 3 × 3 × 13 × 719. Its digits add up to 18, a total 2,332 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10100100010011011
  • 🏠 Its numerical neighbours: 84122 (Salt Lake City, UT, 1 mi away) and 84124 (Salt Lake City, UT, 7 mi away).
  • 🔄 Backwards, 84123 becomes 32148 — and that is a real ZIP code: Interlachen, FL, 1,849 miles away.
  • 👥 55 other ZIP codes are made of exactly the same digits (12438, 12483, 12834, 12843, 13428, 13482, …). The farthest-flung twin is 12834 in Greenwich, NY, 1,966 miles away.
  • 🧭 Farther north than 62% of all ZIP codes, and farther west than 87%.
  • 🎯705 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 84123 and you would come out at 40.66°S, 68.08°E — 609 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 05m of daylight. Shortest: 9h 15m.
  • 📏 At 8.3 square miles of land, 84123 is bigger than 25% of ZIP codes — room for about 6.3 Central Parks.
🌙 The sky over 84123 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population37,054This ZIP37,054
Households14,258This ZIP14,258
Housing units15,082This ZIP15,082
Median age34.7This ZIP34.7Utah32.0US 38.9
Median household income$81,271This ZIP$81,271Utah$95,166US $80,734
Median home value$464,500This ZIP$464,500Utah$489,400US $332,700
Median gross rent$1,467This ZIP$1,467Utah$1,496US $1,413
Bachelor's degree or higher28.0%This ZIP28.0%
Mean commute21.9 minThis ZIP21.9 min
Population density4,480.0 / sq miThis ZIP4,480.0 / sq mi

Business and tax activity

Business establishments950This ZIP950
Employees24,877This ZIP24,877
Annual payroll$1,549,426,000This ZIP$1,549,426,000
Tax returns filed18,440This ZIP18,440
Total adjusted gross income$1,187,692,000This ZIP$1,187,692,000

Land area

Land area8.27 sq miThis ZIP8.27 sq mi
Water area0.00 sq mi

Other place names in 84123

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

ZIP codes near 84123

ZIPCityDistance
84090 Sandy, UT 1.0 mi
84091 Sandy, UT 1.0 mi
84110 Salt Lake City, UT 1.0 mi
84122 Salt Lake City, UT 1.0 mi
84125 Salt Lake City, UT 1.0 mi
84126 Salt Lake City, UT 1.0 mi
84127 Salt Lake City, UT 1.0 mi
84130 Salt Lake City, UT 1.0 mi
84131 Salt Lake City, UT 1.0 mi
84134 Salt Lake City, UT 1.0 mi

Find every ZIP code within 10 miles of 84123 →

Questions about this ZIP code

Where is ZIP code 84123?

84123 is in Salt Lake City, Utah, in Salt Lake County, part of the Salt Lake City-Murray, UT metropolitan area. Its published point location is 40.6584, -111.9217.

What county is 84123 in?

84123 lies in Salt Lake County.

What area code is 84123?

Salt Lake City uses area codes 801 and 385, from NANPA's telephone records.

What time zone is 84123 in?

84123 uses America/Denver.

How many people live in 84123?

About 37,054 people live in ZIP code 84123, in 14,258 households, at 4,480.0 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 84123?

$81,271 a year, against $95,166 across Utah.

What ZIP codes are near 84123?

The closest are 84090 (1 mi), 84091 (1 mi), 84110 (1 mi), 84122 (1 mi) and 84125 (1 mi).

Is 84123 a PO Box ZIP code?

84123 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “84123 ZIP Code — Salt Lake City, Utah (Salt Lake County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/84123

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