Kennebec, South Dakota
Kennebec: City in and county seat of Lyman County, South Dakota, United States
About
Kennebec is a city located in the county of Lyman in the U.S. state of South Dakota. Its population at the 2010 census was 240 and a population density of 109 people per km². After 10 years in 2020 city had an estimated population of 247 inhabitants.
Quick Facts about Kennebec
| Population : | 247 (2020) |
| Country : | United States of America |
| State : | South Dakota (United States) |
| County : | Lyman County |
| Postal code : | 57544 |
| Phone Area Codes : | 605 |
| Area : | 2.21 km2 |
| Altitude : | 1,686 feet / 514 meters |
| Capital city : | Kennebec is capital of Lyman County |
| Time Zone : | Central Time Zone |
| Local time : | 09:17:18 (5th December 2025) |
| Density : | 112 Pop. per km² as of 2020 |
| Population growth : | 2.83% (2010-2020) |
Geography
Kennebec is located at 43°54'13"N 99°51'42"W (43.9036000, -99.8617800).
Kennebec map
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Demographics
The population of Kennebec increased by 2.83% in 10 years.
| Year | Population | % Change | Method |
| 2010 | 240 | - | census |
| 2011 | 242 | 0.83% | estimation process |
| 2012 | 240 | -0.83% | estimation process |
| 2013 | 245 | 2.04% | estimation process |
| 2014 | 248 | 1.21% | estimation process |
| 2015 | 257 | 3.5% | estimation process |
| 2016 | 258 | 0.39% | estimation process |
| 2017 | 256 | -0.78% | estimation process |
| 2018 | 250 | -2.4% | estimation process |
| 2019 | 247 | -1.21% | estimation process |
| 2020 | 247 | 0% | estimation process |
People born in Kennebec (1)
American congressman for South Dakota (1923-2012) James Abdnor was born in Kennebec
Post offices near Kennebec
| Post Office Name | City | ZIP |
|---|---|---|
| Kenneb Post Office | Kennebec (SD) | 57544 |
Other cities in Lyman County
Cities, towns, neighborhoods & other populated places in Lyman County , SD.
| City Name | Population | Title |
|---|---|---|
| Lower Brule | 613 | Township in Lyman County, South Dakota |
| Presho | 489 | Human settlement in Lyman County, South Dakota, United States of America |
| Reliance | 210 | Town in Lyman County, South Dakota, United States |
| Vivian | 145 | Census-designated place in Lyman County, South Dakota, United States |
| Iona | 81 | Unincorporated community in South Dakota |
| Oacoma | 70 | Township in Lyman County, South Dakota |
