Alcester is a city in Union County, South Dakota, home to about 989 people across 0.7 square miles. Its ZIP code is 57001.
Homes sold for a median of $166 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 Alcester. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Alcester’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Eppley Airfield (OMA)123 miles away |
|---|---|
| Closer regional airport | Sioux Falls Regional Airport (FSD)40 miles away |
| Nearest city of 250,000+ | Omaha, NE124 miles away |
| Nearest city of 1 million+ | Chicago, IL463 miles away |
Straight-line distances from the center of Alcester; 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.
Alcester had 820 residents in the 2020 census, down 7% since 2000.
It’s the 77th largest of 440 towns in South Dakota by population.
Union County grew from 11,153 residents in 1900 to 16,811 in 2020.
Union 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 7°F. About 30 inches of rain and melted snow fall in a typical year, with about 31 inches of snow.
Source: NOAA 1991–2020 climate normals, Hawarden, IA weather station (7 miles away).
9,844 jobs at 555 businesses in Union County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
5 doctors and other health care providers list an office in Alcester.
Nearest hospitals
Providers with an office here
| Dentists | 1 |
|---|---|
| Nurse practitioners and physician assistants | 1 |
| Physical and occupational therapists | 2 |
| Chiropractors | 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.
Libraries
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 Alcester-Hudson School District 61-1. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Alcester-Hudson Preschool - 05Alcester | Pre-K | 33 | Public | 1.5 mi |
| Alcester-Hudson Elementary - 04Alcester | K–6 | 166 | Public | 1.5 mi |
| Alcester-Hudson Jr. High - 03Alcester | 7–8 | 53 | Public | 1.5 mi |
| Alcester-Hudson High School - 01Alcester | 9–12 | 99 | Public | 1.5 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.