84120 ZIP Code, West Valley City, UT
84120 is a ZIP code in West Valley City, Utah in Salt Lake County. It covers 10 square miles of land. The closest ZIP codes are 84128, 84119 and 84118. 50,799 people live here in 13,847 households, more than in 9 of every 10 Utah ZIP codes. At about 5,031 people per square mile it is built up to city-neighborhood density, and most homes are owner-occupied (76%). Median household income is $94,306, close to the Utah median of $95,166; 47% of households have children under 18.
Quick facts
- Mailing city: West Valley City, UT
- County: Salt Lake County
- Land area: 10 sq mi
- Population: 50,799
- Median household income: $94,306
- Carrier routes: 22 (14,581 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 50,799 |
| Households | 13,847 |
| Median household income | $94,306 |
| Income per person | $30,612 |
| Median age | 31.3 |
| Homeowners | 76.3% |
| Median home value | $413,600 |
| Median rent | $1,467 |
| Bachelor's degree or higher | 15.2% |
| Average commute (minutes) | 21.6 |
| Households with kids under 18 | 46.8% |
| Moved in the past year | 13.2% |
| Below the poverty line | 11.0% |
| Broadband internet | 94.1% |
| Speak a non-English language at home | 42.0% |
Household income
| % of households | Value |
|---|---|
| <$10K | 1.4% |
| $10–15K | 1.2% |
| $15–25K | 3.3% |
| $25–35K | 4.4% |
| $35–50K | 12.1% |
| $50–75K | 17.2% |
| $75–100K | 13.7% |
| $100–150K | 25.7% |
| $150–200K | 11.5% |
| $200K+ | 9.6% |
Age
| % of all residents | Value |
|---|---|
| <10 | 16.3% |
| 10–19 | 16.9% |
| 20–24 | 7.3% |
| 25–34 | 15.3% |
| 35–44 | 12.9% |
| 45–54 | 11.7% |
| 55–64 | 9.4% |
| 65–74 | 6.5% |
| 75+ | 3.8% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 51.1% |
| Owned outright | 23.1% |
| Rented | 22.6% |
| Vacant | 3.2% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 77.4% |
| Townhome | 5.7% |
| 2–4 units | 5.2% |
| 5–19 units | 3.0% |
| 20+ units | 4.4% |
| Mobile / other | 4.3% |
Businesses in 84120
864 business establishments with 29,348 employees (ZIP Codes Business Patterns 2023).
- Construction: 142
- Retail Trade: 107
- Accommodation and Food Services: 97
- Health Care and Social Assistance: 92
- Wholesale Trade: 63
- Other Services (except Public Administration): 56
- Professional, Scientific, and Technical Services: 54
- Administrative and Support and Waste Management and Remediation Services: 51
EDDM carrier routes
84120 has 22 USPS carrier routes with 14,581 residential and 747 business mailboxes. Open the EDDM route map.
Carrier routes in 84120
84120 has 22 USPS carrier routes (22 city (C)) with 14,581 residential and 747 business mailboxes. Routes range from 485 homes (C036) to 869 homes (C012); the median route has 678 homes. The Census counted 13,847 households in 84120 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 1 |
| 500–749 | 14 |
| 750–999 | 6 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 84120 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C021 — USPS business mailboxes 278, 0 homes
- Route C030 — USPS business mailboxes 115, 659 homes
- Route C027 — USPS business mailboxes 111, 754 homes
- Route C012 — USPS business mailboxes 60, 869 homes
- Route C001 — USPS business mailboxes 46, 836 homes
Select these 5 routes on the route map
Every carrier route in 84120
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C001 | City | 836 | 46 | $119,514 | — | — | — |
| C004 | City | 555 | 2 | $85,268 | — | — | — |
| C006 | City | 638 | 0 | $107,284 | — | — | — |
| C007 | City | 563 | 3 | $71,354 | — | — | — |
| C008 | City | 673 | 0 | $117,981 | — | — | — |
| C009 | City | 794 | 30 | $91,080 | — | — | — |
| C010 | City | 731 | 8 | $101,471 | — | — | — |
| C012 | City | 869 | 60 | $69,427 | — | — | — |
| C013 | City | 855 | 5 | $110,570 | — | — | — |
| C016 | City | 546 | 13 | $98,736 | — | — | — |
| C017 | City | 676 | 0 | $117,981 | — | — | — |
| C019 | City | 835 | 1 | $84,554 | — | — | — |
| C020 | City | 718 | 2 | $113,000 | — | — | — |
| C021 | City | 0 | 278 | $94,619 | — | — | — |
| C025 | City | 678 | 27 | $91,080 | — | — | — |
| C027 | City | 754 | 111 | $94,619 | — | — | — |
| C029 | City | 693 | 2 | $117,981 | — | — | — |
| C030 | City | 659 | 115 | $102,342 | — | — | — |
| C033 | City | 641 | 20 | $101,471 | — | — | — |
| C034 | City | 633 | 15 | $113,000 | — | — | — |
| C035 | City | 749 | 1 | $110,570 | — | — | — |
| C036 | City | 485 | 8 | $101,471 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 84120 on the EDDM route map.
How route demographics are estimated
Mailbox counts come from USPS; demographics are estimates
The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).
How a route gets its figures: the block-group length-share method
We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.
Margins of error
Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.
Different years
USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.
Why some routes show identical figures
Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.
Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Nearby ZIP codes
- 84128 — West Valley City city, UT (2.2 mi)
- 84119 — West Valley City city, UT (2.9 mi)
- 84118 — West Valley City city, UT (3.4 mi)
- 84129 — Taylorsville city, UT (3.6 mi)
- 84104 — Salt Lake City city, UT (3.8 mi)
- 84123 — Taylorsville city, UT (5 mi)
- 84084 — West Jordan city, UT (5.5 mi)
- 84115 — South Salt Lake city, UT (5.8 mi)
Areas that include 84120
- West Valley City, UT ZIP codes — 4 ZIP codes
- Salt Lake County ZIP codes — 42 ZIP codes
- Utah ZIP code data
Where it ranks
- No. 5 of 37: highest share of households with children in Salt Lake County
- No. 6 of 37: lowest median age in Salt Lake County
Mail every home in 84120
Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 84120, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 84120 in?
- 84120 is a West Valley City, UT mailing address. By land area, 100% lies inside West Valley City.
- What county is 84120 in?
- 84120 is in Salt Lake County.
- What is the population of 84120?
- About 50,799 people (±2,517), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 51,212.
- What is the median household income in 84120?
- $94,306 (±$4,460), compared with $95,166 for Utah as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 84120?
- 22 USPS carrier routes with 14,581 residential and 747 business mailboxes (15,330 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 84120?
- The closest, measured center to center: 84128 (2.2 mi, West Valley City), 84119 (2.9 mi, West Valley City), 84118 (3.4 mi, West Valley City), 84129 (3.6 mi, Taylorsville), 84104 (3.8 mi, Salt Lake City) and 84123 (5 mi, Taylorsville).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.