What to know about ZIP 83121
ZIP code 83121 covers Kemmerer, WY in Lincoln County.
It sits in telephone area code 307; U.S. House district WY-00; the SALT LAKE CITY media market.
Kemmerer city, WY
ZIP Code 83121 — Kemmerer city, WY Demographics & Data
Source: U.S. Census Bureau ACS 2019–2023 5-Year Estimates. Page data updated 2026-08-02.
Low Snow Area
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At a glance
Overview of ZIP Code 83121
Climate risk and migration signals
FEMA’s National Risk Index rates natural-hazard risk for Kemmerer city, WY as Relatively Low (composite score 51.9), which is near the middle of the national distribution. The strongest component scores on US5 are wildfire (83.6) and flood (35.5). These scores are county-linked NRI values published for planning context — all ZIP codes in the same county share the same composite score on US5. Useful when comparing insurance and disaster exposure across areas, not a substitute for a parcel-level flood or fire determination.
Climate normals for Kemmerer city, WY show little to no average snow and around 9.4 inches of annual precipitation.
Nearby (from this ZIP)
Airport EVW (45.7 miles (73.6 km)) · Utah State University (66.2 miles (106.5 km)) · Fossil Butte National Monument (12.0 miles (19.4 km)) · VA: Evanston Primary Care Telehealth Outreach Clinic (44.5 miles (71.7 km))
Full lists and map pins are in the Infrastructure section below.