| Official Name: | Kennebec, South Dakota |
| Settlement Type: | Town |
| Mapsize: | 250px |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | South Dakota |
| Subdivision Type2: | County |
| Subdivision Name2: | Lyman |
| Established Title3: | Incorporated |
| Established Date3: | 1909[1] |
| Unit Pref: | Imperial |
| Area Footnotes: | [2] |
| Area Total Km2: | 2.21 |
| Area Land Km2: | 2.21 |
| Area Water Km2: | 0.00 |
| Area Total Sq Mi: | 0.85 |
| Area Land Sq Mi: | 0.85 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Total: | 281 |
| Population Density Km2: | 127.18 |
| Population Density Sq Mi: | 329.43 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Coordinates: | 43.9036°N -99.8619°W |
| Elevation Ft: | 1690 |
| Postal Code Type: | ZIP code |
| Postal Code: | 57544 |
| Area Code: | 605 |
| Blank Name: | FIPS code |
| Blank Info: | 46-33580[3] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1267443 |
Kennebec is a town in and the county seat of Lyman County, South Dakota, United States. The population was 281 at the 2020 census.[4]
Kennebec was laid out in 1905.[5] Kennebec has served as county seat of Lyman County since 1922. The courthouse dates from 1925.[6]
The highways that run in or near Kennebec are east–west Interstate 90 (I‑90) and South Dakota Highway 273 (SD 273), which is a north–south highway.
The one main transportation for Kennebec is by road (I‑90 and SD 273), as there is no airport, municipal or commercial. There are no trains for passengers but the Ringneck & Western Railroad provides freight service to the Wheat Growers' Kennebec Elevator.[7]
According to the United States Census Bureau, the town has a total area of 0.85sqmi, all land.[8]
Kennebec is located about 25miles west-northwest of Chamberlain, 42miles east of Murdo, 89miles west of Mitchell, and 180miles east of Rapid City. Kennebec is located in a section of agricultural use area in Kennebec Township. Medicine Creek is about one eighth of a mile south of Kennebec.
As of the census[9] of 2010, there were 240 people, 112 households, and 69 families residing in the town. The population density was 282.4PD/sqmi. There were 146 housing units at an average density of 171.8/sqmi. The racial makeup of the town was 90.0% White, 6.7% Native American, and 3.3% from two or more races.
There were 112 households, of which 23.2% had children under the age of 18 living with them, 50.9% were married couples living together, 7.1% had a female householder with no husband present, 3.6% had a male householder with no wife present, and 38.4% were non-families. 33.9% of all households were made up of individuals, and 17.9% had someone living alone who was 65 years of age or older. The average household size was 2.14 and the average family size was 2.72.
The median age in the town was 45.6 years. 22.5% of residents were under the age of 18; 5% were between the ages of 18 and 24; 20.8% were from 25 to 44; 25.4% were from 45 to 64; and 26.3% were 65 years of age or older. The gender makeup of the town was 51.7% male and 48.3% female.
As of the census of 2000, there were 286 people, 120 households, and 80 families residing in the town. The population density was 336.9sp=usNaNsp=us. There were 152 housing units at an average density of 179.1sp=usNaNsp=us. The racial makeup of the town was 88.46% White, 6.64% Native American, 1.05% Asian, and 3.85% from two or more races. Hispanic or Latino of any race were 0.70% of the population.
There were 120 households, out of which 24.2% had children under the age of 18 living with them, 55.8% were married couples living together, 4.2% had a female householder with no husband present, and 33.3% were non-families. 30.0% of all households were made up of individuals, and 18.3% had someone living alone who was 65 years of age or older. The average household size was 2.38 and the average family size was 3.01.
In the town, the population was spread out, with 24.8% under the age of 18, 4.2% from 18 to 24, 25.2% from 25 to 44, 25.5% from 45 to 64, and 20.3% who were 65 years of age or older. The median age was 44 years. For every 100 females, there were 110.3 males. For every 100 females age 18 and over, there were 104.8 males.
The median income for a household in the town was $36,875, and the median income for a family was $50,000. Males had a median income of $26,161 versus $17,813 for females. The per capita income for the town was $20,815. About 3.9% of families and 8.1% of the population were below the poverty line, including 6.1% of those under the age of eighteen and 5.2% of those 65 or over.