Ipswich is a city in Edmunds County, South Dakota, United States. The population was 954 at the 2010 census. It is the county seat of Edmunds County.
Ipswich is located at 45°26′42″N 99°1′49″W / 45.44500°N 99.03028°W / 45.44500; -99.03028 (45.445009, -99.030239).
According to the United States Census Bureau, the city has a total area of 1.34 square miles (3.47 km), all of it land.
As of the census of 2010, there were 954 people, 402 households, and 249 families residing in the city. The population density was 711.9 inhabitants per square mile (274.9/km). There were 441 housing units at an average density of 329.1 per square mile (127.1/km). The racial makeup of the city was 97.5% White, 0.1% African American, 0.9% Native American, 0.1% Asian, and 1.4% from two or more races. Hispanic or Latino of any race were 0.7% of the population.
There were 402 households of which 29.6% had children under the age of 18 living with them, 51.7% were married couples living together, 7.5% had a female householder with no husband present, 2.7% had a male householder with no wife present, and 38.1% were non-families. 35.6% 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 2.24 and the average family size was 2.91.
The median age in the city was 45.1 years. 23.3% of residents were under the age of 18; 6.3% were between the ages of 18 and 24; 20.3% were from 25 to 44; 27.3% were from 45 to 64; and 22.7% were 65 years of age or older. The gender makeup of the city was 49.8% male and 50.2% female.
As of the census of 2000, there were 943 people, 404 households, and 254 families residing in the city. The population density was 719.3 people per square mile (277.9/km²). There were 440 housing units at an average density of 335.6 per square mile (129.7/km²). The racial makeup of the city was 98.52% White, 0.21% African American, 0.42% Native American, 0.11% Asian, 0.11% Pacific Islander, 0.21% from other races, and 0.42% from two or more races. Hispanic or Latino of any race were 0.64% of the population.
There were 404 households out of which 29.7% had children under the age of 18 living with them, 54.0% were married couples living together, 7.7% had a female householder with no husband present, and 37.1% were non-families. 34.2% of all households were made up of individuals and 20.8% had someone living alone who was 65 years of age or older. The average household size was 2.32 and the average family size was 3.01.
In the city, the population was spread out with 27.4% under the age of 18, 5.3% from 18 to 24, 23.4% from 25 to 44, 19.3% from 45 to 64, and 24.6% who were 65 years of age or older. The median age was 41 years. For every 100 females, there were 92.1 males. For every 100 females age 18 and over, there were 84.1 males.
The median income for a household in the city was $33,073, and the median income for a family was $40,598. Males had a median income of $30,268 versus $16,413 for females. The per capita income for the city was $19,890. About 6.7% of families and 8.7% of the population were below the poverty line, including 6.2% of those under age 18 and 19.2% of those age 65 or over.
Ipswich South Dakota neighborhoods include: Alcester, Baltic, Black Hawk, Box Elder, Brandon, Buffalo Ridge, Camp Crook, Canton, Caputa, Central City, Chancellor, Colton, Creighton, Crooks, Custer, Deadwood, Dell Rapids, Elkton, Ellsworth Afb, Garretson, Hartford, Hermosa, Hill City, Howes, Humboldt, Keystone, Lead, Ludlow, Montrose, Nemo, New Underwood, North Sioux City, Owanka, Parker, Quinn, Rapid City, Renner, Rowena, Saint Onge, Scenic, Sherman, Silver City, Sioux Falls, Spearfish, Sturgis, Valley Springs, Wall, Wanblee, Wasta, Whitewood