Alexandria is a city in Monroe Township, Madison County, Indiana, United States. It is about 46 miles (74 km) northeast of Indianapolis. According to the 2010 census, its population was 5,145, a decrease of 17.8% from 6,260 in 2000.
Alexandria was platted in 1836, when it was certain that the Indiana Central Canal would be extended to that point. It was incorporated as a town in 1898.
Alexandria is located at 40°15′47″N 85°40′35″W. According to the 2010 census, Alexandria has a total area of 2.63 square miles (6.81 km2), all land.
Alexandria is part of the Anderson, Indiana metropolitan statistical area.
As of the census of 2010, there were 5,145 people, 2,113 households, and 1,362 families living in the city. The population density was 1,956.3 inhabitants per square mile (755.3/km2). There were 2,507 housing units at an average density of 953.2 per square mile (368.0/km2). The racial makup of the city was 97.4% White, 0.3% African American, 0.1% Native American, 0.2% Asian, 0.8% from other races, and 1.1% from two or more races. Hispanic or Latino of any race were 1.7% of the population.