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Thermopolis

A town of 2,709 people in Wyoming
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The places and views that make it Thermopolis

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Outdoors in Thermopolis

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Conserved land27%424 of 1,570 acres
Trails14 mi5.4 mi per sq mi
Parks & preserves2157 conserved acres per 1,000 residents

Know a trail or park that’s missing? Anyone can add it to OpenStreetMap, and it shows up here on the next refresh.

Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US

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About Thermopolis

Town in Wyoming, United States
2,725Population
2.5 sq miArea
4,331 ftElevation

Thermopolis is the county seat and most populous town in Hot Springs County, Wyoming, United States. As of the 2020 census, Thermopolis had a population of 2,725. Thermopolis, Greek for "hot city", is the location of numerous natural hot springs, in which mineral-laden waters are heated by geothermal processes. The town claims the world's largest mineral hot spring, "The Big Spring", as part of Hot Springs State Park. The springs are open to the public for free as part of an 1896 treaty signed with the Shoshone and Arapaho Indian tribes.

Official town website ↗

From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)

Town numbers

ZIP code82443
Area code307
Living in Thermopolis

Housing in Thermopolis

$217K▲ 1.7% in a year Typical home value · Zillow

The typical Thermopolis home is worth about $217,000, up 1.7% in a year, 42% below the Wyoming typical home.

Zillow Home Value Index · Redfin Data CenterHousing market →

Safety in Thermopolis

A−

Safety Grade A-

Thermopolis reports less crime per resident than 84% of the U.S. towns and cities we grade.

Violent crime per 1,000
Thermopolis 0.7
Wyoming 1.9
U.S. 3.3
Property crime per 1,000
Thermopolis 3.6
Wyoming 11
U.S. 15.5
FBI crime data, 2025 · crimes reported to policeCrime & safety →

Work & commute in Thermopolis

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53% of Thermopolis’s working residents work right in town. The top destinations are Worland (4%), Casper (2%) and Cody (2%). Half commute less than 1 miles.

Worland
4%
Casper
2%
Cody
2%
Riverton
2%
Census LEHD 2023 · ACSWork & commute in Thermopolis →

Health in Thermopolis

B−

Health Grade B−

Healthier than 47% of U.S. towns on seven CDC estimates, and 65% of towns with similar incomes.

Compared with Wyoming

1better than WY·9worse

of 26 measures CDC estimates. The other 16 are too close to call.

BetterToo close to callWorse

What stands out

Care nearby

Hot Springs County Memorial HospitalThermopolis · 0.5 mi · ER · rural critical access
Community Health Center of Central Wyoming - RivertonRiverton · 43.6 mi · sliding-scale fees
Primary careShortage · county-wide
DentalNo shortage
Mental healthShortage · county-wide
CDC PLACES 2025 · modeled estimates for adults · CDC's estimate for Thermopolis · CMS · HRSAHealth in Thermopolis →

Natural hazards in Thermopolis

84
Very high

Expected storm and flood damage is higher than in 84% of U.S. communities.

🌊 Inland flooding🏚️ Earthquakes🥶 Cold waves
FEMA National Risk Index December 2025 · OpenFEMANatural hazards in Thermopolis →

Climate in Thermopolis

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Thermopolis has cold winters and warm summers, with very little rain. A typical July afternoon reaches 90°, a January night drops to 8°, and about 27 inches of snow falls in a normal winter.

35° / 10°Winter
60° / 32°Spring
86° / 53°Summer
61° / 32°Fall
NOAA U.S. Climate Normals, 1991–2020Climate in Thermopolis →

Schools in Thermopolis

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B

School Grade B

The public schools Thermopolis’s kids attend, from kindergarten through graduation, outperform 63% of Wyoming’s districts on state tests and graduation. Among towns with similar incomes, they sit near the middle.

#3Best public schoolsof 29 in WY
DistrictHot Springs County School District #1Schools3

School data from the U.S. Department of Education (NCES, EDFacts). The School Grade is our own summary of state test results and graduation rates, graded within WY. Ratings are from neighbors.

Thermopolis’s library

Library details →
Hot Springs County Library344 Arapahoe Street · part of Hot Springs County Library
Fine-freeE-books52 hrs a week
IMLS Public Libraries Survey · FY2024Hot Springs County Library →
Famous people from ThermopolisWriters, athletes, leaders and more who were born in Thermopolis.Meet them →

Where Thermopolis is

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Locator map of Thermopolis
Wikimedia Commons · Map: DemocraticLuntz · DemocraticLuntz at English Wikipedia · CC BY-SA 4.0

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Boundary source: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Places_CouSub_ConCity_SubMCD/MapServer/18 · 2025-01-01