As of the census of 2010, there were 350 people, 139 households, and 91 families residing in the city. The population density was. There were 153 housing units at an average density of. The racial makeup of the city was 96.9% White, 0.3% African American, 0.3% Asian, 1.4% from other races, and 1.1% from two or more races. Hispanic or Latino of any race were 3.4% of the population. There were 139 households of which 30.9% had children under the age of 18 living with them, 57.6% were married couplesliving together, 2.9% had a female householder with no husband present, 5.0% had a male householder with no wife present, and 34.5% were non-families. 25.2% of all households were made up of individuals and 8.6% had someone living alone who was 65 years of age or older. The average household size was 2.52 and the average family size was 3.10. The median age in the city was 38.7 years. 24.3% of residents were under the age of 18; 7% were between the ages of 18 and 24; 27% were from 25 to 44; 27.5% were from 45 to 64; and 14.6% were 65 years of age or older. The gender makeup of the city was 51.7% male and 48.3% female.
2000 census
As of the census of 2000, there were 276 people, 119 households, and 79 families residing in the city. The population density was 368.7 people per square mile. There were 130 housing units at an average density of 173.6 per square mile. The racial makeup of the city was 92.03% White, 0.72% African American, 5.80% from other races, and 1.45% from two or more races. Hispanic or Latino of any race were 5.07% of the population. There were 119 households out of which 31.1% had children under the age of 18 living with them, 54.6% were married couples living together, 9.2% had a female householder with no husband present, and 33.6% were non-families. 29.4% of all households were made up of individuals and 14.3% 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 2.84. In the city, the population was spread out with 27.2% under the age of 18, 6.9% from 18 to 24, 25.0% from 25 to 44, 25.0% from 45 to 64, and 15.9% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 97.1 males. For every 100 females age 18 and over, there were 97.1 males. The median income for a household in the city was $34,286, and the median income for a family was $37,321. Males had a median income of $31,000 versus $22,500 for females. The per capita income for the city was $16,813. About 6.0% of families and 10.2% of the population were below the poverty line, including 17.1% of those under the age of eighteen and 8.5% of those sixty five or over.
Parks and recreation
Darwin is the home of Darwin–Dassel Park. The Twine Ball Museum is located at Darwin.
