Residential delivery area · Utah
ZIP Code 84340: Willard, UT
ZIP code 84340 uses the postal name Willard, Utah and lies entirely in Box Elder County (Census 2020 ZIP-county file). About 3,700 people live there (Census Bureau, ACS 2020-2024). Median household income is $108,304 (Census Bureau, ACS 2020-2024). By Census place, its land lies in South Willard (18%) and Willard (17%), and 2% in smaller places; 63% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Willard · its only residential ZIP
- County
- Box Elder County
- Census places
- South Willard (18%) census-designated place; Willard (17%)
- Micro area
- Brigham City, UT-ID
- House district
- UT-1 119th Congress
- State
- Utah
- Time zone
- Mountain
- Land area
- 32.2 sq mi · 116 people per sq mi
Where is ZIP code 84340?
84340 centers on 41.403°, -112.179° and covers 32.2 square miles of land plus 23.0 of water. It borders 3 ZIP codes: 84404, 84414, 84302.
The map draws ZIP code areas only. For the streets inside 84340, 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).
How does 84340 compare with the rest of Box Elder County?
| Measure | 84340 | In Box Elder County | In UT |
|---|---|---|---|
| People (ACS 2020-2024) | 3,744 | 4th of 19 | 118th of 298 |
| Median household income | $108k | 2nd of 6 | 46th of 145 |
| Median home value | $498k | 2nd of 7 | 64th of 153 |
Its median household income is higher than in 86% of U.S. residential ZIP codes, and it is denser than 56% 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 84340?
The 2020 Census counted 3,834 people in 84340; the ACS, which samples households over 2020-2024, estimates 3,744. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 3,744
- 2020 Census count
- 3,834
- Households
- 1,211
- Median age
- 37.9
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 84340?
Of the 3,744 people the ACS estimates in 84340, 25.9% are under 18 and 14.1% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (88.3%).
- Under 1825.9%
- 18 to 6460.0%
- 65 and older14.1%
- White, not Hispanic88.3%
- Hispanic or Latino6.9%
- Other or two or more2.6%
- Asian, not Hispanic2.1%
- Black, not Hispanic0.1%
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 84340 earn?
Median household income is $108,304 (ACS 2020-2024), the 2nd highest of the 6 ranked ZIP codes in Box Elder County.
- Median household income
- $108,304±$21,170
- Income per person
- $42,051
- Below the poverty line
- 4.6%
- Unemployed (of the labor force)
- 1.1%
- Adults 25+ with a bachelor's degree
- 34.8%
- Adjusted gross income per tax return, 2022
- $85,5811,960 returns; wages 75% 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 84340?
FHFA's house price index for 84340, built from repeat sales and appraisals of the same homes, rose 111% from 2015 to 2025 and rose 49% from 2020 to 2025, and moved +0.2% in 2025.
- Median home value (owners' estimate)
- $498,000
- Median gross rent
- $1,577
- Homes owned by their occupants
- 84.2%
- Housing units
- 1,219
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 84340?
83 business establishments had a location in this ZIP code in 2023, 15 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction30
- Manufacturing10
- Other services (except public administration)10
- Retail trade6
- Real estate and rental and leasing6
- Professional, scientific, and technical services5
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 84340?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 84404 | Ogden | 66,587 | $85k | 9.8 mi |
| 84414 | Ogden | 34,334 | $115k | 12.2 mi |
| 84302 | Brigham City | 27,053 | $80k | 14.2 mi |
| 84324 | Mantua | 1,677 | $142k | 13.8 mi (near) |
| 84301 | Bear River City | 889 | $90k | 14.8 mi (near) |
| 84401 | Ogden | 48,303 | $81k | 14.8 mi (near) |
| 84315 | Hooper | 9,873 | $110k | 16.4 mi (near) |
| 84067 | Roy | 38,794 | $91k | 17.4 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.