Boarded-up abandoned housing in Jeffrey City, Wyoming, 2011
Jeffrey City’s story
Jeffrey City in pictures
The archive holds 4 old photos and papers going back to 2004 and 2 maps from 1951 on.
Explore the history →
Jeffrey CityWY
A town in Wyoming.
Split Rock, Twin Peaks · Photo: JERRYE & ROY KLOTZ MD · CC BY-SA 3.0
Land area
29 sq mi
Is Jeffrey City a good place to live?
Jeffrey City’s January low is 10°F, where Wyoming’s towns sit at 13°F and U.S. towns at 22°F. We don’t grade Jeffrey City yet; the figures below are still real.
Getting set up
Moving to Jeffrey City: who provides what
Jeffrey City is unincorporated, so Fremont County and regional agencies provide most services.
PowerHigh Plains Power14.2¢/kWh · EIA 2025HIFLD · EIA
WaterJeffrey City Water & Sewer District1 health-based violation in 5 years · EPAEPA
Internet2 providers75% of addresses get 100/20 MbpsFCC
Trash & county servicesFremont CountyFremont County provides services here
Register to voteIn personWyoming has no online registration; you can register in person up to and including Election Day or by mail (received 14 days before).vote.govWho runs elections hereFremont County ClerkFremont County; contacts on the Handbook page.FVAP, Jun 2025
ZIP codes82310, 8252082310 74% · 82520 26%Census 2020
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Nov 18, 2024.
The data
Ordered by what stands out in Jeffrey City.
Natural hazards
Top of a high hazard risk in Jeffrey City: inland flooding
Of the losses FEMA expects in Jeffrey City, 47% come from inland flooding and 17% from avalanches. On expected storm and flood damage, Jeffrey City sits above 70% of U.S. communities.
70risk score of 100
FEMA risk score
Inland floodingAvalanchesWildfire
FEMA National Risk Index · OpenFEMA
| School | Level | Students | Letter |
|---|---|---|---|
| Jeffrey City ElementaryLargest public school before high school | – | – |
NCES · EDFacts
Climate
Expect snowy winters and pleasant summers in Jeffrey City
July afternoons reach 85°, January nights drop to 10° and about 60 inches of snow falls in a winter.
60″snow a winter
Typical low → high °F
Winter11–32°
Spring28–54°
Summer48–81°
Fall30–57°
Sep 13
typical first frost
Jun 1
typical last frost
+1.6°
vs. the 20th-century average
NOAA U.S. Climate Normals, 1991–2020
Outdoors
7.1% of the land in Jeffrey City is protected from building
The trail network density for Jeffrey City comes to 0.8 miles per square mile.
7.1%conserved
| Jeffrey City | Wyoming towns | U.S. towns | |
|---|---|---|---|
| Miles of trail per square mile | 0.8 miles per square mile | 1.2 | 0.4 |
| Conserved land | 7.1% | 8.8% | 4.3% |
7.1%
conserved · 1,289 of 18,126 acres
24 mi
of trails · 0.8 per sq mi
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US
Keep exploring
Everything we know about Jeffrey City
13pages on Jeffrey City
The big questions
After high school
Colleges nearby
None within 15 miles of Jeffrey City; the nearest are
About Jeffrey City
Census-designated place in Wyoming, United States
Jeffrey City is a former uranium mining boomtown located in Fremont County, in the central part of the U.S. state of Wyoming. The town is known in Wyoming and the American West as symbol of a boomtown that went "bust" very quickly, as the mine was shut down in 1982 and over 95% of the inhabitants left the town within three years. The population was 58 at the 2010 census, far lower than its onetime population of several thousand people. For statistical purposes, the United States Census Bureau has defined Jeffrey City as a census-designated place (CDP).
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
- Area
- 29 sq mi
- Elevation
- 6,335 ft
- ZIP code
- 82310
- Area code
- 307
Questions about Jeffrey City
Short answers, built from the data on this page.
Is Jeffrey City, WY a good place to live?
We don’t grade Jeffrey City yet; the figures below are still real. A town in Wyoming.