Buffalo is a town in Harding County, South Dakota, home to about 278 people across 0.6 square miles. Its ZIP code is 57720.
Homes sold for a median of $138 per square foot in the three months ending August 2026.
Each card is that ZIP code’s whole market, including any part outside Buffalo. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Buffalo’s story and what everyday life there is like, for people thinking about moving in.
Are you a local agent who knows Buffalo well? Agents who advertise here will be able to write the guide. Advertise on OfferBacked
| Nearest major airport | Denver International Airport (DEN)398 miles away |
|---|---|
| Closer regional airport | Dickinson Theodore Roosevelt Regional Airport (DIK)92 miles away |
| Nearest city of 250,000+ | Denver, CO407 miles away |
| Nearest city of 1 million+ | Chicago, IL834 miles away |
Straight-line distances from the center of Buffalo; 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.
Buffalo had 346 residents in the 2020 census, down 9% since 2000.
It’s the 208th largest of 440 towns in South Dakota by population.
Harding County grew from 4,228 residents in 1910 to 1,311 in 2020.
Harding County, 1910–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 86°F in summer, and winter lows average 11°F. About 13.4 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Buffalo Asos, SD weather station (3 miles away).
344 jobs at 43 businesses in Harding 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 Buffalo.
Nearest hospitals
Providers with an office here
| Specialist doctors | 1 |
|---|---|
| Nurse practitioners and physician assistants | 2 |
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
Libraries
Museums
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 Harding County School District 31-1. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Buffalo Elementary - 02Buffalo | K–5 | 101 | Public | 1.9 mi |
| Harding County Middle School - 03Buffalo | 6–8 | 60 | Public | 1.9 mi |
| Harding County High School - 01Buffalo | 9–12 | 66 | Public | 1.9 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 Buffalo? 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…
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.