🇺🇸 United States ZIP Code

STANDARD

84120

West Valley City

ZIP Code 84120 is a standard zip code serving West Valley City, West Valley City, Utah (UT), in Salt Lake County, United States. It has an estimated population of 48,956 with a median household income of $55,087. The area falls within the America/Denver timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Utah (UT)
County: Salt Lake
City: West Valley City
Timezone: America/Denver

Coordinates

Latitude: 40.691600
Longitude: -112.001100

Geographic Details

Land Area: 10.17 mi²
Population Density: 4812.0 people per mi² (90th percentile)
Bounding Box: 40.732521°N, 40.667230°S, -111.967560°E, -112.026483°W

With 48,956 residents spread across 10.17 square miles, this area has a population density of 4812.0 people per square mile.

Demographics

48,956

Population

95th percentile

$55,087

Median Income

65th percentile

$169,500

Median Home Value

65th percentile

10.17 mi²

Land Area

The median household income in 84120 is $55,087, and the median home value is $169,500.

Housing

13,994

Total Units

13,465

Occupied Units

96.2%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in West Valley City, UT.

84119

West Valley City

84128

West Valley City

Similar ZIP Codes in Utah

ZIP codes with similar median household income in Utah.

84741

Kanab

$49,858

84319

Hyrum

$57,328

84404

Ogden

$50,739

84341

Logan

$47,931

84066

Roosevelt

$61,384

84312

Garland

$56,429

84629

Fairview

$58,110

84759

Panguitch

$47,208

Frequently Asked Questions

What information is available for each ZIP code?

Each ZIP code page shows city, state, county, geographic coordinates, timezone, population, median household income, median home value, housing units, land area, population density, commute time, educational attainment, area codes, and ZIP code type (Standard, PO Box, or Unique).

What are the different types of ZIP codes?

There are three types of ZIP codes: Standard (residential and commercial delivery areas), PO Box (assigned to post office box sections), and Unique (assigned to a single high-volume address like a government agency or large company). Standard ZIP codes are the most common.

How often is ZIP code data updated?

ZIP code assignments are updated quarterly by the USPS. Demographic data comes from the US Census Bureau's American Community Survey (ACS), which releases new 5-year estimates annually. ZipFYI updates its data to reflect the latest available information.

What is population density and why does it matter?

Population density measures the number of people per square mile in a ZIP code area. It helps identify urban vs. rural areas, affects real estate values, impacts service availability, and is used in market analysis. Dense urban ZIP codes may have 50,000+ people per square mile.

How are ZIP code boundaries determined?

ZIP code boundaries are determined by the USPS based on mail delivery routes, not political or geographic boundaries. They follow carrier routes and may cross city, county, or even state lines. Boundaries can change when the USPS reorganizes delivery operations.

What does median household income tell me about a ZIP code?

Median household income is the middle value when all household incomes in a ZIP code are sorted. Half of households earn more and half earn less. It is a better indicator of typical earnings than average income, which can be skewed by very high or very low outliers.