such as roads, the foundation for Fort Sumter, and the Statue of Liberty. Granite was replaced by concrete which slowly shrank the granite industry until the 1930s. 20th century During the 20th century, sheep farms were replaced by dairy farms. Between 1920 and 1960, there were about 100 dairy farms in Waterford. In addition, there were 10 to 100 heads of cattle. Waterford also obtained its town seal in 1946. It was made by Martin Branner who was a cartoonist who also made the famous comic, Winnie Winkle. After World War II, Waterford boomed with development. Many new roads and building were made. Also, Waterford's population increased by 10,000 between 1946 and the present time. In 1957, the first stop light was added in Waterford. In addition, the first retail center was built starting in 1960. Demographics The town consists of a wide variety of rural and city living. At the 2010 census, there were 19,517 people in 8,005 households, including 5,335 families, in the town. The population density was . There were 7,986 housing units at an average density of . The racial makeup of the town was 89.4% White, 2.5% African American, 0.5% Native American, 3.7% Asian, 0.1% Pacific Islander, 1.3% from other races, and 2.5% from two or more races. Hispanic or Latino of any race were 4.7% of the population. There were 8,005 households, 26.4% had children under the age of 18 living with them, 53.0% were married couples living together, 9.2% had a female householder with no husband present, and 33.4% were non-families. 28.0% of households were made up of individuals, and 9.8% were one person aged 65 or older. The average household size was 2.38, and the average family size was 2.91. The age distribution was 22.9% under the age of 20, 3.9% from 20 to 24, 21.3% from 25 to 44, 31.9% from 45 to 64, and 20.1% 65 or older. The median age was 46.1 years. The median household income was $73,156 and the median family income was $93,933. The per capita income for the town was $114,645. About 3.1% of families and 5.4% of the population were below the poverty line, including 3.9% of those under age 18 and 6.9% of those age 65 or over. Town center At the 2010 census, there were 2,887 people in 1,327 households, including 732 families, in the Waterford census-designated place, comprising the town center.