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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/84128

84128

ZIP 84128 is in West Valley City, Utah, in Salt Lake County; area codes 801 and 385; Mountain time. West Valley City has 3 ZIP codes; the others are 84119 and 84120.

Type
Standard
Time zone
America/Denver
County
Salt Lake
Population
32,126
Coordinates
40.7052, -112.0426
☼ Live from 84128 — West Valley City, UT

Weather right now

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NEXRAD radar
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Local time: —

Where 84128 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 84128
  • 🔢 Type 84128 into a pocket calculator and turn it upside down: BZIhB — not quite a word, sorry.
  • ➕ As a number, 84,128 = 2 × 2 × 2 × 2 × 2 × 11 × 239. Its digits add up to 23, a total 2,533 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10100100010100000
  • 🏠 Its numerical neighbours: 84127 (Salt Lake City, UT, 7 mi away) and 84129 (Salt Lake City, UT, 6 mi away).
  • 🔄 Backwards, 84128 becomes 82148, which is not a ZIP code at all.
  • 👥 21 other ZIP codes are made of exactly the same digits (12848, 12884, 14882, 18248, 18428, 18824, …). The farthest-flung twin is 12848 in Middle Falls, NY, 1,970 miles away.
  • 🧭 Farther north than 63% of all ZIP codes, and farther west than 87%.
  • 🎯712 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 84128 and you would come out at 40.71°S, 67.96°E — 607 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 06m of daylight. Shortest: 9h 15m.
  • 📏 At 8.4 square miles of land, 84128 is bigger than 25% of ZIP codes — room for about 6.4 Central Parks.
🌙 The sky over 84128 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population32,126This ZIP32,126
Households8,414This ZIP8,414
Housing units8,599This ZIP8,599
Median age30.9This ZIP30.9Utah32.0US 38.9
Median household income$110,726This ZIP$110,726Utah$95,166US $80,734
Median home value$438,300This ZIP$438,300Utah$489,400US $332,700
Median gross rent$1,866This ZIP$1,866Utah$1,496US $1,413
Bachelor's degree or higher17.1%This ZIP17.1%
Mean commute25.1 minThis ZIP25.1 min
Population density3,833.7 / sq miThis ZIP3,833.7 / sq mi

Business and tax activity

Business establishments317This ZIP317
Employees2,607This ZIP2,607
Annual payroll$129,278,000This ZIP$129,278,000
Tax returns filed14,570This ZIP14,570
Total adjusted gross income$881,841,000This ZIP$881,841,000

Land area

Land area8.38 sq miThis ZIP8.38 sq mi
Water area0.00 sq mi

Other place names in 84128

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

ZIP codes near 84128

ZIPCityDistance
84120 West Valley City, UT 2.2 mi
84118 Salt Lake City, UT 3.4 mi
84104 Salt Lake City, UT 4.4 mi
84044 Magna, UT 4.6 mi
84184 Salt Lake City, UT 4.9 mi
84119 West Valley City, UT 5.0 mi
84129 Salt Lake City, UT 5.5 mi
84199 Salt Lake City, UT 5.6 mi
84084 West Jordan, UT 7.0 mi
84081 West Jordan, UT 7.1 mi

Find every ZIP code within 10 miles of 84128 →

Questions about this ZIP code

Where is ZIP code 84128?

84128 is in West Valley City, Utah, in Salt Lake County, part of the Salt Lake City-Murray, UT metropolitan area. Its published point location is 40.7052, -112.0426.

What county is 84128 in?

84128 lies in Salt Lake County.

What area code is 84128?

West Valley City uses area codes 801 and 385, from NANPA's telephone records.

What time zone is 84128 in?

84128 uses America/Denver.

How many people live in 84128?

About 32,126 people live in ZIP code 84128, in 8,414 households, at 3,833.7 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 84128?

$110,726 a year, against $95,166 across Utah.

What ZIP codes are near 84128?

The closest are 84120 (2.2 mi), 84118 (3.4 mi), 84104 (4.4 mi), 84044 (4.6 mi) and 84184 (4.9 mi).

Is 84128 a PO Box ZIP code?

84128 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “84128 ZIP Code — West Valley City, Utah (Salt Lake County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/84128

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