Kennebec Flag

Kennebec

County:
Lyman County
County Seat:
Yes
Area (mi²):
0.853
State:
South Dakota

Kennebec is a town located in Lyman County, South Dakota. Kennebec has a 2026 population of 288. It is also the county seat of Lyman County. Kennebec is currently growing at a rate of 0.7% annually and its population has increased by 3.6% since the most recent census, which recorded a population of 278 in 2020.

The median household income in Kennebec is $74,896 with a poverty rate of 6.08%. The median age in Kennebec is 38 years: 40.9 years for males, and 33.2 years for females. For every 100 females there are 81.6 males.

288
Total Population
338
Density (mi²)
2 0.7%
Growth

Kennebec Population

Kennebec Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202628820.7%
202528610.35%
2024285-1-0.35%
2023286-2-0.69%
2022288-4-1.37%
2021292145.04%
2020278-1-0.36%
2019247-2-0.8%
2018249-7-2.73%
2017256-2-0.78%
201625820.78%
201525683.23%
201424831.22%
201324562.51%
2012239-3-1.24%
201124220.83%
201024000%

Median Age

Overall: 38 years
Female: 33.2 years
Male: 40.9 years

Kennebec Adults

There are 205 adults, (58 of whom are seniors) in Kennebec.

Sex Ratio

Female: 163 (55.1%)
Male: 133 (44.9%)

Demographics

The racial composition of Kennebec includes 93.24% White, 5.41% Native American, and smaller percentages for Two or more races and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White27693.24%
Native American165.41%
Two or more races41.35%
Race
Population ↓
Percentage (of total)
White27693.24%
Native American165.41%
Two or more races41.35%

Kennebec Marital Status

Economics and Income Statistics

Kennebec 's average per capita income is $49,292. Household income levels show a median of $74,896. The poverty rate stands at 6.08%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Married Families$104,500-
Families$104,000$120,707
Households$74,896$90,063
Non Families$45,250$55,938

$49,292

Average Income

$74,896

Median Household Income

6.08%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)