Altamont is a town in Deuel County, South Dakota, home to about 46 people across 1.3 square miles. It has no ZIP code of its own: it’s part of 57226.
Homes sold for a median of $102 per square foot in the three months ending August 2026, a seller’s market.
Mostly Clear Lake (Deuel County); part is in Altamont
Each card is that ZIP code’s whole market, including any part outside Altamont. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Altamont’s story and what everyday life there is like, for people thinking about moving in.
Are you a local agent who knows Altamont well? Agents who advertise here will be able to write the guide. Advertise on OfferBacked
| Nearest major airport | Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field (MSP)170 miles away |
|---|---|
| Closer regional airport | Watertown Regional Airport (ATY)25 miles away |
| Nearest city of 250,000+ | Minneapolis, MN168 miles away |
| Nearest city of 1 million+ | Chicago, IL496 miles away |
Straight-line distances from the center of Altamont; 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.
Altamont had 32 residents in the 2020 census, down 6% since 2000.
It’s the 378th largest of 440 towns in South Dakota by population.
Deuel County grew from 6,656 residents in 1900 to 4,295 in 2020.
Deuel County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 80°F in summer, and winter lows average 2°F. About 27.6 inches of rain and melted snow fall in a typical year, with about 61 inches of snow.
Source: NOAA 1991–2020 climate normals, Clear Lake, SD weather station (about a mile away).
1,038 jobs at 143 businesses in Deuel County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
14 doctors and other health care providers list an office in Altamont.
Nearest hospitals
Providers with an office here
| Primary care doctors | 2 |
|---|---|
| Specialist doctors | 1 |
| Dentists | 2 |
| Nurse practitioners and physician assistants | 6 |
| Mental health providers | 1 |
| Physical and occupational therapists | 2 |
| Pharmacies | 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.
Pharmacies (1 nearby)
Libraries (1 nearby)
Counts are within about 1 mile 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.
Public schools here are run by Deuel School District 19-4. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Clear Lake Elementary - 02Clear Lake | Pre-K–5 | 270 | Public | 0.6 mi |
| Clear Lake Middle School - 04Clear Lake | 6–8 | 104 | Public | 0.6 mi |
| Deuel High School - 01Clear Lake | 9–12 | 176 | Public | 0.6 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.
Buying or selling around Altamont? Tell us what you need and when. No agents advertise here yet, so we’ll keep your request for up to 30 days and send it to local agents who join. No obligation, and you choose who to work with.
Loading map…
Shares ZIP codes with Clear Lake (Deuel County).
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.