Residential delivery area · Utah
ZIP Code 84120: West Valley City, UT
ZIP code 84120 is in West Valley City, Utah, entirely in Salt Lake County (Census 2020 ZIP-county file). About 51,000 people live there (Census Bureau, ACS 2020-2024), the most populous of West Valley City's 3 residential ZIP codes. Median household income is $94,306 (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- West Valley City · 3 residential ZIPs
- County
- Salt Lake County
- Census places
- West Valley City
- Neighborhoods
- Academy Park, Acord Acres, Alpine Meadows, Amanda Acres, Arlington Park, Arnold Estates and 87 more GeoNames
- Metro area
- Salt Lake City-Murray, UT
- House districts
- UT-2 (75%), UT-4 (25%) 119th Congress, by share of land
- State
- Utah
- Time zone
- Mountain
- Land area
- 10.1 sq mi · 5,031 people per sq mi
Where is ZIP code 84120?
84120 centers on 40.697°, -112.002° and covers 10.1 square miles of land. It borders 5 ZIP codes: 84128, 84119, 84118, 84129, 84104.
The map draws ZIP code areas only. For the streets inside 84120, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0); neighborhoods from the GeoNames gazetteer (CC BY 4.0), placed in this ZIP code by PlainZIP.
How does 84120 compare with the rest of West Valley City?
| Measure | 84120 | In West Valley City | In Salt Lake County | In UT |
|---|---|---|---|---|
| People (ACS 2020-2024) | 50,799 | 1st of 3 | 3rd of 42 | 12th of 298 |
| Median household income | $94k | 2nd of 3 | 20th of 36 | 70th of 145 |
| Median home value | $414k | 2nd of 3 | 30th of 36 | 104th of 153 |
Its median household income is higher than in 77% of U.S. residential ZIP codes, and it is denser than 94% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 84120?
The 2020 Census counted 51,212 people in 84120; the ACS, which samples households over 2020-2024, estimates 50,799. Between the 2010 and 2020 censuses its population grew 4.6% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 50,799
- 2020 Census count
- 51,212+4.6% since 2010 (48,956)
- Households
- 13,847
- Median age
- 31.3
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 84120?
Of the 50,799 people the ACS estimates in 84120, 29.6% are under 18 and 10.3% are 65 or older. The largest group by race and Hispanic origin is Hispanic or Latino (41.4%), then White (not Hispanic) (39.5%).
- Under 1829.6%
- 18 to 6460.1%
- 65 and older10.3%
- Hispanic or Latino41.4%
- White, not Hispanic39.5%
- Other or two or more9.8%
- Asian, not Hispanic6.8%
- Black, not Hispanic2.5%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 84120 earn?
Median household income is $94,306 (ACS 2020-2024), the 20th highest of the 36 ranked ZIP codes in Salt Lake County. It rose from $84,224 in 2015-2019 (in 2024 dollars), a change larger than the surveys' margins of error.
- Median household income
- $94,306
- Income per person
- $30,612
- Below the poverty line
- 11.0%
- Unemployed (of the labor force)
- 3.5%
- Adults 25+ with a bachelor's degree
- 15.2%
- Adjusted gross income per tax return, 2022
- $53,50823,230 returns; wages 83% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 84120?
FHFA's house price index for 84120, built from repeat sales and appraisals of the same homes, rose 142% from 2015 to 2025 and rose 53% from 2020 to 2025, and moved +2.9% in 2025.
- Median home value (owners' estimate)
- $413,600
- Median gross rent
- $1,467
- Homes owned by their occupants
- 76.3%
- Housing units
- 14,316
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 84120?
864 business establishments had a location in this ZIP code in 2023, 132 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction142
- Retail trade107
- Accommodation and food services97
- Health care and social assistance92
- Wholesale trade63
- Other services (except public administration)56
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 84120?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 84128 | West Valley City | 32,126 | $111k | 2.2 mi |
| 84119 | West Valley City | 50,070 | $71k | 2.9 mi |
| 84118 | Salt Lake City | 42,853 | $91k | 3.4 mi |
| 84129 | Salt Lake City | 37,442 | $96k | 3.6 mi |
| 84104 | Salt Lake City | 23,420 | $61k | 3.8 mi |
| 84123 | Salt Lake City | 37,054 | $81k | 5.0 mi (near) |
| 84084 | West Jordan | 31,542 | $96k | 5.5 mi (near) |
| 84115 | Salt Lake City | 28,882 | $66k | 5.8 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.