Custer is a city in Custer County, South Dakota, home to about 2,341 people across 2.5 square miles. Its ZIP code is 57730.
Homes sold for a median of $279 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 Custer. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Custer’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Denver International Airport (DEN)270 miles away |
|---|---|
| Closer regional airport | Rapid City Regional Airport (RAP)32 miles away |
| Nearest city of 250,000+ | Denver, CO279 miles away |
| Nearest city of 1 million+ | Chicago, IL808 miles away |
Straight-line distances from the center of Custer; 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.
Custer had 1,919 residents in the 2020 census, up 3% since 2000.
It’s the 41st largest of 440 towns in South Dakota by population.
Custer County grew from 2,728 residents in 1900 to 8,318 in 2020.
Custer County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 85°F in summer, and winter lows average 15°F. About 21.2 inches of rain and melted snow fall in a typical year, with about 46 inches of snow.
Source: NOAA 1991–2020 climate normals, Wind Cave, SD weather station (7 miles away).
1,536 jobs at 327 businesses in Custer County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
48 doctors and other health care providers list an office in Custer.
Nearest hospitals
Providers with an office here
| Primary care doctors | 11 |
|---|---|
| Dentists | 4 |
| Nurse practitioners and physician assistants | 6 |
| Mental health providers | 7 |
| Physical and occupational therapists | 15 |
| Optometrists | 2 |
| Chiropractors | 3 |
| 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.
Public schools here are run by Custer School District 16-1. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Custer Elementary - 02Custer | Pre-K–6 | 269 | Public | 10.8 mi |
| Custer Jr. High - 05Custer | 7–8 | 101 | Public | 10.8 mi |
| A.C.E. High Academy - 06Custer | 9–12 | 16 | Alternative Education | 11.7 mi |
| Custer High School - 01Custer | 9–12 | 272 | Public | 10.8 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.