San Luis is a town in Costilla County, Colorado, home to about 560 people across 0.6 square miles. Its ZIP code is 81152.
Homes sold for a median of $64 per square foot in the three months ending August 2026, a buyer’s market.
Each card is that ZIP code’s whole market, including any part outside San Luis. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up San Luis’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | City of Colorado Springs Municipal Airport (COS)125 miles away |
|---|---|
| Closer regional airport | San Luis Valley Regional Airport/Bergman Field (ALS)31 miles away |
| Nearest city of 250,000+ | Colorado Springs, CO128 miles away |
| Nearest city of 1 million+ | Phoenix, AZ445 miles away |
Straight-line distances from the center of San Luis; 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.
San Luis had 598 residents in the 2020 census, down 19% since 2000.
It’s the 278th largest of 472 towns in Colorado by population.
Costilla County grew from 4,632 residents in 1900 to 3,499 in 2020.
Costilla County, 1900–2020
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 6°F. About 9 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, San Luis 1 S, CO weather station (7 miles away).
385 jobs at 50 businesses in Costilla County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
3 doctors and other health care providers list an office in San Luis.
Nearest hospitals
Providers with an office here
| Primary care doctors | 1 |
|---|---|
| Nurse practitioners and physician assistants | 1 |
| Mental health providers | 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.
Public schools here are run by Centennial School District No. R-1. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Centennial SchoolSan Luis | Pre-K–12 | 186 | Public | 7.7 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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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.