Kennebec is a city located in South Dakota. With a 2020 population of 248, it is the 166th largest city in South Dakota and the 15993rd largest city in the United States. Kennebec is currently declining at a rate of -0.40% annually but its population has increased by 3.33% since the most recent census, which recorded a population of 240 in 2010. Kennebec reached it's highest population of 257 in 2016. Spanning over 1 miles, Kennebec has a population density of 291 people per square mile.
The average household income in Kennebec is $63,823 with a poverty rate of 11.93%. The median rental costs in recent years comes to $741 per month, and the median house value is $85,600. The median age in Kennebec is 40.2 years, 41.5 years for males, and 37.5 years for females. For every 100 females there are 128.6 males.