Alexander is a village in Genesee County, New York, United States. The population was 509 at the 2010 census. The village is named after early settler, Alexander Rea.
According to the United States Census Bureau, the village has a total area of 0.42 square miles (1.1 km). None of the area is covered with water.
Tonawanda Creek flows to the northeast through the village. It eventually turns west and is a tributary of the Niagara River. Alexander is at the junction of Alexander Road (NY Route 98) and Broadway (US Route 20). NY 98 leads north 8 miles (13 km) to Batavia, the county seat, and south 3 miles (5 km) to Attica. US 20 leads east 26 miles (42 km) to Avon and west 22 miles (35 km) to Depew. Buffalo is 32 miles (51 km) to the west of Alexander.
As of the census of 2000, there were 481 people, 172 households, and 121 families residing in the village. The population density was 1,099.4 people per square mile (422.1/km²). There were 178 housing units at an average density of 406.8 per square mile (156.2/km²). The racial makeup of the village was 98.34% White, 0.21% Native American, 0.83% Asian, and 0.62% from two or more races. Hispanic or Latino of any race were 0.42% of the population.
There were 172 households out of which 41.3% had children under the age of 18 living with them, 58.1% were married couples living together, 5.8% had a female householder with no husband present, and 29.1% were non-families. 23.3% of all households were made up of individuals and 10.5% had someone living alone who was 65 years of age or older. The average household size was 2.80 and the average family size was 3.30.
In the village, the population was spread out with 33.3% under the age of 18, 6.9% from 18 to 24, 31.4% from 25 to 44, 17.5% from 45 to 64, and 11.0% who were 65 years of age or older. The median age was 33 years. For every 100 females, there were 106.4 males. For every 100 females age 18 and over, there were 98.1 males.
The median income for a household in the village was $51,528, and the median income for a family was $60,000. Males had a median income of $42,917 versus $21,071 for females. The per capita income for the village was $26,837. None of the families and 0.8% of the population were living below the poverty line, including no under eighteens and none of those over 64.