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ZIP Code 84340
Plain City, UT, Box Elder County
Population
3,744
Land area
32.2sq mi
People per sq mi
116
City
Plain City
ZIP 84340 and nearby ZIP codes
ZIP 84340 at a glance
- ZIP 84340 (Plain City) is about 2.8 times as dense as Utah as a whole.
- Households here earn a median of $108,304 a year, 14% more than the Utah figure of $95,166.
- A typical owner-occupied home is valued at $498,000 and median rent is $1,577 a month.
Local data for ZIP 84340
Counts from official public data
Housing and community stats
ZIP 84340, American Community Survey 2020-2024
Median household income
$108,304
Poverty rate
4.6%
Median home value
$498,000
Prices +0.2% in a year
Median rent
$1,577/mo
Homeownership
84.2%
Bachelor's or higher
34.8%
Median age
37.9
Average commute
24.9 min
Economy and federal money
Businesses, pandemic loans and political donations
Business establishments
83
ZIP Business Patterns 2023
Employees
459
$23.1M annual payroll
PPP loans
$1.8M
66 loans
Campaign donations
$4,591
13% D, 13% R, 2026 cycle
Environment and hazard risk
ZIP 84340, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Low
Top: wildfire
Storm events since 1996
393
Countywide, mostly thunderstorm wind
Flood insurance policies
38
0.2% of homes, county
July high / Jan low
91° / 18°F
15.5 inches of rain a year
Health statistics
Share of adults in ZIP 84340, CDC PLACES estimates
Obesity
30.8%
U.S. 33.3% -2.5 pts
Diabetes
8.5%
U.S. 12.1% -3.6 pts
Smoking
8.4%
U.S. 12.8% -4.4 pts
Uninsured (18-64)
7.9%
U.S. 11.1% -3.2 pts
Frequently asked questions
- What city is ZIP code 84340?
- ZIP code 84340 is in Plain City, UT (Box Elder County).
- What county is ZIP code 84340 in?
- ZIP code 84340 is mostly in Box Elder County, Utah.
- How many people live in ZIP code 84340?
- About 3,744 people live in the 84340 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.
Source: U.S. Census Bureau (ZIP Code Tabulation Areas, American Community Survey) · Data as of 12/31/2023. ZIP Code Tabulation Areas closely match, but are not identical to, USPS ZIP code delivery areas.