the Hamilton County Courthouse Square, the Catherine Street Historic District, Cole-Evans House, Conner Street Historic District, William Houston Craig House, Daniel Craycraft House, Dr. Samuel Harrell House, Holliday Hydroelectric Powerhouse and Dam, Nickel Plate Road Steam Locomotive No. 587, Noblesville Commercial Historic District, Noblesville Milling Company Mill, South 9th Street Historic District, Judge Earl S. Stone House, and Robert L. Wilson House. Geography Noblesville is located in central Hamilton County at (40.049935, −86.021462). It is bordered to the north by Cicero, to the south by Fishers and Carmel, and to the west by Westfield. A narrow portion of Noblesville extends east to the Madison County line, where it is bordered by the town of Ingalls. Noblesville is north-northeast of downtown Indianapolis. Indiana State Road 37 is the main highway through the city, running east of downtown. It leads south to Interstate 69 in Fishers and thence to Indianapolis, and northeast to Marion. Conner Street, carrying state routes 32 and 38, is the main east–west road through the center of Noblesville. SR 32 leads east-northeast to Anderson and west to Westfield, while SR 38 leads east-southeast to Pendleton and northwest to Sheridan. Indiana State Road 19 runs north from Noblesville, leading to Tipton. According to the 2010 census, Noblesville has a total area of , of which (or 95.68%) is land and (or 4.32%) is water. Demographics As of 2000, the median income for a household in the city was $73,395, and the median per capita income was $33,732. Approximately 45.22% of the population has a higher education degree with over 87.3% of the population at least having a high school diploma or GED. The median housing value is $171,272 with a total of 17,915 housing units. 2010 census As of the census of 2010, there were 51,969 people, 19,080 households, and 13,989 families residing in the city. The population density was . There were 21,121 housing units at an average density of . The racial makeup of the city was 91.1% White, 3.6% African American, 0.2% Native American, 1.7% Asian, 0.1% Pacific Islander, 1.6% from other races, and 1.8% from two or more races. Hispanic or Latino of any race were 4.3% of the population. There were 19,080 households, of which 42.9% had children under the age of 18 living with them, 58.3% were married couples living together, 10.8% had a female householder with no husband present, 4.2% had a