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 |
| Latitude & Longitude | 43.9036,-99.8618 |
| Altitude | 1,686 feet / 514 meters |
| Capital city | Kennebec is capital of Lyman County |
| Time Zone | Central Time Zone |
| Local time | 19:45:10 (22nd April 2026) |
| Density | 112 Pop. per km² as of 2020 |
| Population growth | 2.83% (2010-2020) |
| Weather | 89℉ Mostly Sunny 7-days weather |
Geography
Kennebec is located at 43°54'13"N 99°51'42"W (43.9036000, -99.8617800).
Kennebec map
icon to open full mode. View satellite images
Weather
Mostly sunny, with a high near 89. South southeast wind 15 to 35 mph, with gusts as high as 45 mph.
7-Day ForecastDemographics
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
Closest post offices linked to 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 |