Zip Code 84120
West Valley City, Utah — Salt Lake County
📍 ZIP code 84120 is in West Valley City, Salt Lake County, Utah.
ZIP code 84120 is located in West Valley City, Salt Lake County, Utah. It is a zip code in the Mountain (MST/MDT) Time Zone with an estimated population of 50,589. The area code for ZIP code 84120 is 801.
Quick Answer
Zip code 84120 is in West Valley City, Utah (Salt Lake County). It has a population of 50,589, median household income of $90,847, and median home value of $370,800.
Population
50,589
Income
$90,847
Home Value
$370,800
Climate
94°F / 24°F
About Zip Code 84120
Zip code 84120 is located in West Valley City, Utah, within Salt Lake County. Home to approximately 50,589 residents, this area sits at an elevation of 4270 ft and falls within the Mountain (MST/MDT) timezone. The local area code is 801.
The median household income is $90,847 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $370,800, and the cost of living index is 119 (19% above the national average of 100).
Summers average a high of 94°F while winters drop to 24°F. The area receives about 16 in of rain and 52 in of snow annually. The zip code covers 10.2 square miles of land area.
Key Statistics
50,589
$90,847
$370,800
Mountain (MST/MDT)
801
4270 ft
10.2 sq mi
30.9
14,184
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Compare With Nearby Zip Codes
| Metric | 84120 | 84128 | 84119 | 84118 | 84104 | 84123 |
|---|---|---|---|---|---|---|
| City | West Valley City, UT | West Valley City, UT | West Valley City, UT | Taylorsville, UT | Salt Lake City, UT | Salt Lake City, UT |
| Population | 50,589 | 32,072 | 50,745 | 41,969 | 24,057 | 36,913 |
| Median Income | $90,847 | $109,286 | $66,616 | $87,457 | $61,326 | $80,079 |
| Home Value | $370,800 | $404,600 | $341,800 | $348,500 | $318,100 | $436,600 |
| Cost of Living | 119 | 128 | 95 | 110 | 93 | 122 |
| Median Age | 30.9 | 30.7 | 28.8 | 32 | 34.1 | 34.3 |
Cost of Living
100 = National Average. West Valley City's cost of living is 19% above the national average.
vs. State Avg
Above
Affordability
Moderate
Income-to-Home
4.1x
Demographics
Zip code 84120 has a population of 50,589 people with a median age of 30.9. There are 14,184 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
West Valley City (84120) population trend from 2010 to 2024
↓ -20.8%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
94°F
24°F
16 in
52 in
West Valley City experiences hot summers with average highs around 94°F. Winters are cool with lows averaging 24°F. With 52 in of annual snowfall, residents should be prepared for significant winter weather.
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Housing & Economy
Median Home Value
$370,800
Median Household Income
$90,847
With 14,184 housing units across 10.2 square miles, 84120 has a housing density of 1,391 units per square mile. The home price-to-income ratio is 4.1x.
Location & Geography
Latitude
40.6975°
Longitude
-112.0012°
Land Area
10.2 sq mi
Water Area
0 sq mi
Nearby Zip Codes
Zip codes closest to 84120 (West Valley City, UT) with distances:
All Zip Codes in West Valley City, UT
Other zip codes serving West Valley City:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 84120's $90,847. A way to compare West Valley City to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 84120 (West Valley City, UT). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is West Valley City, Utah?
West Valley City, Utah uses zip code 84120 along with 2 other zip codes.
What county is zip code 84120 in?
Zip code 84120 is located in Salt Lake County, Utah.
What is the population of zip code 84120?
The population of zip code 84120 is 50,589 with a median age of 30.9.
Is 84120 in West Valley City, Utah?
Yes, zip code 84120 is in West Valley City, Salt Lake County, Utah. The area code is 801.
Frequently Asked Questions
What city is zip code 84120 in?
Zip code 84120 is in West Valley City, Utah. It is part of Salt Lake County and uses the Mountain (MST/MDT) timezone.
What is zip code 84120?
Zip code 84120 is a U.S. postal code in West Valley City, Utah (Salt Lake County). It has a population of 50,589 and covers 10.2 square miles.
What is the population of zip code 84120?
The population of zip code 84120 (West Valley City, UT) is 50,589 with a median age of 30.9. There are approximately 14,184 housing units in this area.
What is the median income in zip code 84120?
The median household income in zip code 84120 (West Valley City, UT) is $90,847 per year. The cost of living index is 119 (100 = national average).
What is the average home price in zip code 84120?
The median home value in zip code 84120 (West Valley City, UT) is $370,800. The cost of living index is 119 compared to the national average of 100.
What county is zip code 84120 in?
Zip code 84120 is located in Salt Lake County, Utah. The primary city is West Valley City.
What is the area code for zip code 84120?
Zip code 84120 in West Valley City, UT uses area code 801. It is located in the Mountain (MST/MDT) timezone.
Is zip code 84120 a good place to live?
Zip code 84120 (West Valley City, UT) has a cost of living index of 119 (100 = national average), a median household income of $90,847, and median home values of $370,800. The median age is 30.9. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 84120?
The cost of living index for zip code 84120 (West Valley City, UT) is 119, where 100 represents the national average. This area is above the national average. Median home value: $370,800.
What schools serve zip code 84120?
Zip code 84120 in West Valley City, Utah is served by the local school district of Salt Lake County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.