Kennebec is a town in Lyman County, South Dakota, home to about 296 people across 0.8 square miles. Its ZIP code is 57544.
Mostly Kennebec
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| Nearest major airport | Eppley Airfield (OMA)269 miles away |
|---|---|
| Closer regional airport | Pierre Regional Airport (PIR)40 miles away |
| Nearest city of 250,000+ | Omaha, NE265 miles away |
| Nearest city of 1 million+ | Chicago, IL632 miles away |
Straight-line distances from the center of Kennebec; 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.
Kennebec had 281 residents in the 2020 census, down 2% since 2000.
It’s the 199th largest of 440 towns in South Dakota by population.
Lyman County grew from 2,632 residents in 1900 to 3,718 in 2020.
Lyman County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 90°F in summer, and winter lows average 9°F. About 20.8 inches of rain and melted snow fall in a typical year, with about 40 inches of snow.
Source: NOAA 1991–2020 climate normals, Kennebec, SD weather station (about a mile away).
621 jobs at 87 businesses in Lyman County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
1 doctors and other health care providers list an office in Kennebec.
Nearest hospitals
Providers with an office here
| 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.
Grocery stores
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 Lyman School District 42-1. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Lyman Elementary - 04Kennebec | Pre-K–5 | 171 | Public | 0.8 mi |
| Lyman Middle School - 02Presho | 6–8 | 84 | Public | 10.7 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.