Get API Key →
US ZIP Code Profile

ZIP Code 84128
West Valley City, Utah

ZIP code 84128 is in West Valley City, located in Salt Lake County, Utah, within the Salt Lake City metro area. Its 2020 Census population was 31,406. The estimated median adjusted gross income per tax return is $46,201, and about 2% of filers report $200,000 or more.

2020 Population
31,406
Census ZCTA
County
Salt Lake
FIPS 49035
Median income (est.)
$46,201
IRS SOI 2022
Land Area
10.228 mi²
+ 0 mi² water

01Location & Geography

Authoritative geographic identifiers from the U.S. Census Bureau, ANSI, and FIPS standards.

Primary CityWest Valley City, UT
CountySalt Lake County (FIPS 49035)
StateUtah (FIPS 49)
Metro Area (MSA)Salt Lake City, UT Metro Area (41620)
Census Region / DivisionWest Region · Mountain Division
Coordinates40.70045, -112.04677
Land / Water Area10.228 mi² land · 0 mi² water

02Income & Economics

Distribution of the 14,570 individual tax returns filed in 84128 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
24.9%
$25K–$50K
29.6%
$50K–$75K
18.3%
$75K–$100K
10.9%
$100K–$200K
14.7%
$200K+
1.6%
The $200,000+ bracket accounts for 11% of 84128's total adjusted gross income, from 2% of returns — a concentration that drives the gap between the median ($46,201) and the average.
Estimated median = median adjusted gross income per tax return, interpolated from IRS SOI brackets. Differs from U.S. Census household income.

03Income Over Time

Year-over-year change in 84128's IRS income metrics, 2020–2022.

Median income (2021→2022)
$46,201
▲ 4.8%
Filers earning $200K+
1.6%
▲ 0.3 pt
Total filers
14,570
▲ 0.6%
GET /zipc/v2/zipcodes/84128/soi?year=… $42K 2020 $44K 2021 $46K 2022
Median = adjusted gross income per return, interpolated from IRS SOI brackets. Figures are nominal (not inflation-adjusted).

04Population Trend

Decennial U.S. Census population for the 84128 ZCTA.

2000
20,620
 
2010
27,983
▲ +35.7%
2020
31,406
▲ +12.2%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 84128. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 84128

West Valley City and its immediate neighbors, sorted by distance.

3 mi
GET /zipc/v2/distance

Distance from 84128 to any ZIP

Enter a 5-digit ZIP to calculate the distance.

06USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypeNon-Postal Community Name, former postal facility or place name
Carrier Route SortD
USPS Finance Number497786
City AliasesSalt Lake City, Salt Lake Cty, Slc, West Valley, West Valley City, W Valley City

07Frequently Asked Questions

What county is ZIP code 84128 in?

ZIP code 84128 is in Salt Lake County, Utah (county FIPS code 49035).

What city is ZIP code 84128?

The primary USPS city for 84128 is West Valley City, UT.

What metro area (MSA) is 84128 in?

84128 is part of the Salt Lake City, UT Metro Area (MSA code 41620).

What is the population of ZIP code 84128?

The 2020 Census population of 84128 was 31,406 residents.

What is the median income in ZIP code 84128?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 84128 is about $46,201, with around 2% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.