is one of the best preserved impact sites on Earth. The impact crater measures approximately in diameter and the city of Manson is located near the center of the impact site. Demographics 2010 census At the 2010 census there were 1,690 people, 771 households, and 483 families living in the city. The population density was . There were 860 housing units at an average density of . The racial makup of the city was 99.2% White, 0.2% Native American, 0.2% from other races, and 0.4% from two or more races. Hispanic or Latino of any race were 0.8%. Of the 771 households 25.6% had children under the age of 18 living with them, 50.2% were married couples living together, 9.3% had a female householder with no husband present, 3.1% had a male householder with no wife present, and 37.4% were non-families. 34.6% of households were one person and 19.7% were one person aged 65 or older. The average household size was 2.14 and the average family size was 2.73. The median age was 47.2 years. 20.5% of residents were under the age of 18; 6.8% were between the ages of 18 and 24; 19.8% were from 25 to 44; 27.1% were from 45 to 64; and 25.9% were 65 or older. The gender makeup of the city was 47.0% male and 53.0% female. 2000 census At the 2000 census there were 1,893 people, 814 households, and 529 families living in the city. The population density was . There were 863 housing units at an average density of . The racial makup of the city was 98.68% White, 0.16% African American, 0.21% Native American, 0.32% Asian, 0.32% from other races, and 0.32% from two or more races. Hispanic or Latino of any race were 0.37%. Of the 814 households 27.4% had children under the age of 18 living with them, 53.8% were married couples living together, 8.7% had a female householder with no husband present, and 34.9% were non-families. 32.7% of households were one person and 21.0% were one person aged 65 or older. The average household size was about 2.27 and the average family size was approximately 2.87. The age distribution was 23.7% under the age of 18, 6.9% from 18 to 24, 22.5% from 25 to 44, 21.4% from 45 to 64, and 25.4% 65 or older. The median age was 44 years. For every 100 females, there were