South Fork is a town in Rio Grande County, Colorado, home to about 724 people across 2.5 square miles. Its ZIP code is 81154.
Homes sold for a median of $339 per square foot in the three months ending August 2026, a balanced market.
Mostly South Fork; also Gerrard and Alpine
Each card is that ZIP code’s whole market, including any part outside South Fork. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
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| Nearest major airport | City of Colorado Springs Municipal Airport (COS)130 miles away |
|---|---|
| Closer regional airport | San Luis Valley Regional Airport/Bergman Field (ALS)44 miles away |
| Nearest city of 250,000+ | Colorado Springs, CO130 miles away |
| Nearest city of 1 million+ | Phoenix, AZ418 miles away |
Straight-line distances from the center of South Fork; 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.
South Fork had 510 residents in the 2020 census, down 16% since 2000.
It’s the 251st largest of 472 towns in Colorado by population.
Rio Grande County grew from 4,080 residents in 1900 to 11,539 in 2020.
Rio Grande County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 81°F in summer, and winter lows average 7°F. About 9.8 inches of rain and melted snow fall in a typical year, with about 39 inches of snow.
Source: NOAA 1991–2020 climate normals, Del Norte 3ene, CO weather station (17 miles away).
2,894 jobs at 374 businesses in Rio Grande County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
2 doctors and other health care providers list an office in South Fork.
Nearest hospitals
Providers with an office here
| Primary care doctors | 1 |
|---|---|
| Dentists | 1 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Grocery stores
Counts are within about 1.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
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Shares ZIP codes with Gerrard and Alpine.
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.