Boulder is a community in Sublette County, Wyoming across 1.9 square miles. It has no ZIP code of its own: it’s part of 82923.
Homes sold for a median of $825 per square foot in the three months ending August 2026, a seller’s market.
Each card is that ZIP code’s whole market, including any part outside Boulder. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Boulder’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Salt Lake City International Airport (SLC)182 miles away |
|---|---|
| Closer regional airport | Central Wyoming Regional Airport (RIW)61 miles away |
| Nearest city of 250,000+ | Denver, CO315 miles away |
| Nearest city of 1 million+ | Phoenix, AZ645 miles away |
Straight-line distances from the center of Boulder; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Boulder had 115 residents in the 2020 census, up 283% since 2000.
Sublette County grew from 1,944 residents in 1930 to 8,728 in 2020.
Sublette County, 1930–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 82°F in summer, and winter lows average -7°F. About 9.4 inches of rain and melted snow fall in a typical year, with about 42 inches of snow.
Source: NOAA 1991–2020 climate normals, Boulder Rearing Stn, WY weather station (8 miles away).
2,642 jobs at 439 businesses in Sublette County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
Nearest hospitals
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.