ZIP code · Lewiston · Utah · United States

ZIP code 84320 — Lewiston

ZIP code 84320 serves Lewiston, Utah.

Postal code
84320
Single source Value from one source, not cross-checked.
City
Lewiston
County
Cache FIPS 49005
State
Utah
Country
United States
Coordinates
41.9701, -111.8768 — precision precise (locality)
View on OpenStreetMap
Population
2,773 (ZCTA, ACS 5-year)
Population density
59 / sq mi
Land area
47.3 sq mi (122.5 km²) (ZCTA, ACS 5-year)
Median household income
$94,583
Per-capita income
$33,737
Median age
31.6
Households
791
Housing units
842
Median home value
$333,700
Median gross rent
$848 / month
Congressional district
UT-1 (119th Congress)
USDA hardiness zone
6a (-10 to -5 °F)
Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
Time zone
America/Denver (UTC−7 / UTC−6 DST)
Area code
435 (from the nearest rate centre)
Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.

Climate — monthly normals

Warmest month Jul (avg high 89°F), coldest Jan (avg low 12°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F323750596979898877634734
Avg low °F121726323945514940312314
Precip in1.51.41.72.02.21.20.60.81.31.51.31.4

NOAA 1991–2020 climate normals from the nearest station: TRENTON (4.2 mi) · NOAA NCEI

Places in ZIP 84320

Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology

About this page

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page