Aurora is a city in Center Township, Dearborn County, Indiana, United States. The population was 3,750 at the 2010 census. Geography Aurora is located at (39.058551, -84.906351). According to the 2010 census, Aurora has a total area of , of which (or 89.41%) is land and (or 10.59%) is water. History Aurora was platted in 1819. It was named for Aurora, the goddess of dawn in Roman mythology. Aurora was incorporated in 1848. Aurora is known for its historic downtown area and the ornate Hillforest mansion built for Thomas Gaff who earned his fortune shipping goods on the Ohio River by steamboat. The mansion was designed by architect Isaiah Rogers and was completed in 1855 in the Italian Renaissance style. The design is symmetrical. Details include deep overhangs, arched windows and balconies and porches. Hillforest was declared a National Historic Landmark in 1992. In addition to Hillforest, the Aurora City Hall, Aurora Methodist Episcopal Church, Aurora Public Library, Downtown Aurora Historic District, First Evangelical United Church of Christ, First Presbyterian Church, George Street Bridge, Lewis Hurlbert, Sr. House, Leive, Parks and Stapp Opera House, Levi Stevens House, and George Sutton Medical Office are listed on the National Register of Historic Places. Demographics 2010 census As of the 2010 census, there were 3,750 people, 1,472 households, and 936 families living in the city. The population density was . There were 1,647 housing units at an average density of . The racial makeup of the city was 97.5% White, 0.5% African American, 0.3% Native American, 0.3% Asian, 0.5% from other races, and 0.7% from two or more races. Hispanic or Latino of any race were 1.5% of the population. There were 1,472 households, of which 35.1% had children under the age of 18 living with them, 42.3% were married couples living together, 15.1% had a female householder with no husband present, 6.1% had a male householder with no wife present, and 36.4% were non-families. 29.1% of all households were made up of individuals, and 11.6% had someone living alone who was 65 years of age or older. The average household size was 2.55 and the average family size was 3.11. The median age in the city was 36.2 years. 26.6% of residents were under the age of 18; 8.7% were between the ages of 18 and 24; 26.5% were from 25 to 44; 25.3% were from 45 to 64; and 12.9% were