| Official Name: | De Smet, South Dakota |
| Mapsize: | 250px |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Leader Title: | Mayor |
| Leader Name: | Gary Wolkow |
| Established Title: | Founded[1] |
| Established Date: | 1880 |
| Established Title3: | Incorporated[2] |
| Established Date3: | 1883 |
| Unit Pref: | Imperial |
| Area Footnotes: | [3] |
| Area Total Km2: | 3.00 |
| Area Land Km2: | 3.00 |
| Area Water Km2: | 0.00 |
| Area Total Sq Mi: | 1.16 |
| Area Land Sq Mi: | 1.16 |
| Area Water Sq Mi: | 0.00 |
| Population Total: | 1056 |
| Population Density Km2: | 351.97 |
| Population Density Sq Mi: | 911.92 |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Coordinates: | 44.3861°N -97.5497°W |
| Elevation Ft: | 1719 |
| Postal Code: | 57231 |
| Blank Info: | 46-16260[4] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1267353 |
De Smet is a city in and the county seat of Kingsbury County, South Dakota, United States.[5] The population was 1,056 at the 2020 census.
Located in the area of South Dakota known as "East River" (east of the Missouri River, which diagonally divides the state), De Smet was platted by European Americans in 1880.[6] It was named for Belgian Father Pierre De Smet,[7] a 19th-century Jesuit missionary who worked with Native Americans in the United States and its territories for most of his life. In the mid-1880s, prairie fires and failures of crops after a three-year period of drought caused many settlers to relocate their farms and homesteads to easier areas.[8] By 1917, De Smet was a cow town, with many trains passing through every day carrying cattle to market.[9]
The Charles Ingalls family, originally of Wisconsin, arrived in De Smet in 1879. Their travels and pioneer life in Minnesota, Kansas, Dakota Territory, and Iowa would be later chronicled in the Little House series of books written by the Ingallses' second oldest daughter, Laura Elizabeth - later known as Laura Ingalls Wilder. Laura Ingalls and her husband Almanzo Wilder would first settle in De Smet along with Wilder's brother, Royal. They were later joined by their older sister, Eliza Jane, who took up a claim of her own. She was one of the first women who filed a claim on their own. There the Wilders lived just outside of De Smet on farmland, as well as Royal's feed store in town. the Ingallses also had a claim outside of town. In the winter they stayed in the town of De Smet, at least while the girls were still in school. After building a home and starting a farm there, Charles Ingalls helped to found the First Congregational Church of De Smet, later helping to build the church building, with the first service being held there on August 30, 1882. Ingalls and his wife, along with oldest daughter Mary, were among the church's eight original charter members.
According to the United States Census Bureau, the city has a total area of 1.16sqmi, all land.[10]
At the 2010 census there were 1,089 people, 478 households, and 290 families living in the city. The population density was 938.8PD/sqmi. There were 552 housing units at an average density of 475.9/mi2. The racial makeup of the city was 98.8% White, 0.1% African American, 0.6% Native American, 0.1% Asian, and 0.5% from two or more races. Hispanic or Latino of any race were 0.5%.[11]
Of the 478 households 24.3% had children under the age of 18 living with them, 52.3% were married couples living together, 5.4% had a female householder with no husband present, 2.9% had a male householder with no wife present, and 39.3% were non-families. 35.6% of households were one person and 22.6% were one person aged 65 or older. The average household size was 2.17 and the average family size was 2.83.
The median age was 49.6 years. 22% of residents were under the age of 18; 4.1% were between the ages of 18 and 24; 17.9% were from 25 to 44; 26% were from 45 to 64; and 29.9% were 65 or older. The gender makeup of the city was 47.2% male and 52.8% female.
At the 2000 census there were 1,164 people, 524 households, and 300 families living in the city. The population density was 1102.2sp=usNaNsp=us. There were 582 housing units at an average density of 551.1/mi2. The racial makeup of the city was 98.37% White, 0.95% Native American, 0.09% Asian, 0.09% from other races, and 0.52% from two or more races. Hispanic or Latino of any race were 0.69%.
Of the 524 households 24.8% had children under the age of 18 living with them, 50.0% were married couples living together, 3.2% had a female householder with no husband present, and 42.7% were non-families. 39.3% of households were one person and 24.2% were one person aged 65 or older. The average household size was 2.09 and the average family size was 2.80.
The age distribution was 20.8% under the age of 18, 6.0% from 18 to 24, 21.1% from 25 to 44, 20.8% from 45 to 64, and 31.3% 65 or older. The median age was 47 years. For every 100 females, there were 89.0 males. For every 100 females age 18 and over, there were 87.0 males.
The median household income was $27,760, and the median family income was $41,989. Males had a median income of $24,722 versus $20,417 for females. The per capita income for the city was $15,372. About 7.3% of families and 11.1% of the population were below the poverty line, including 7.1% of those under age 18 and 18.3% of those age 65 or over.
De Smet is the town where the family of author Laura Ingalls Wilder finally settled, and is the birthplace of Ingalls Wilder's daughter, author and activist Rose Wilder Lane. Ingalls Wilder's father, Charles Ingalls, moved to De Smet in 1879 with his wife, Caroline, and their children Mary, Laura, Carrie, and Grace. There, after first living in the Surveyor House and a couple of other locations in De Smet, Ingalls built their permanent home that became known via Wilder's writings as "The House That Pa Built".
Construction on the house began in 1887 and was completed in 1889. After settling in De Smet, Charles Ingalls owned and operated the Ingalls Store from 1880 to 1881, a small general-type store that sold various goods for the home. While the store building no longer exists, the location is noted in De Smet's downtown area with a marker on what's currently on the site, a former bank building that now houses Gass Law Firm.
De Smet was also the childhood home of supercentenarian Walter Breuning. Artist-illustrator Harvey Dunn was born in 1884 approximately eight miles from De Smet near Manchester, and painted scenes of frontier life in his later years. Harry George Armstrong, a major general in the United States Air Force, a physician, and an airman, was born in De Smet in 1899.