Rensselaer /rɛnsəˈlɪər/ is a city in Rensselaer County, New York, United States, and is located on the east side of the Hudson River directly opposite Albany. As of the 2010 census, the city population was 9,392. Rensselaer is on the western border of Rensselaer County. The area now known as the City of Rensselaer was settled by the Dutch in the 17th century. The city has a rich industrial history stretching back to the 19th century, when it became a major railroad hub; it remains a railroad hub because it is the site of a busy Amtrak station. Rensselaer was one of the earliest locations of the dye industry in the United States, and was the first American location for the production of aspirin.
According to the United States Census Bureau, the city has a total area of 3.3 square miles (8.5 km), of which, 3.0 square miles (7.8 km) of it is land and 0.3 square miles (0.78 km) of it (9.61%) is water. The city is flat along the western and southern areas but the center and northern areas slope steeply to the east.
The city lies next to the Hudson River with Albany County and the city of Albany on the opposite shore. The town of North Greenbush borders the city to the north, and the town of East Greenbush is on the southern border; both towns border the city on the east with the dividing line between the two towns meeting Rensselaer in the middle section of the city’s eastern boundary. Rensselaer’s southern border is even with the city of Albany’s southern border, however the northern border of Rensselaer is slightly south of Albany’s corresponding northern border.
As of the census of 2010, there were 9,392 people, 4,124 households, and 2,457 families residing in the city. The population density was 2,579.2 people per square mile (995.5/km²). There were 3,713 housing units at an average density of 1,233.9 per square mile (476.3/km²). The racial makeup of the city was 82.11% White, 12.06% African American, 0.20% Native American, 2.17% Asian, 0.01% Pacific Islander, and 3.02% from two or more races. Hispanic or Latino of any race were 4.72% of the population.
There were 3,397 households out of which 28.6% had children under the age of 18 living with them, 35.2% were married couples living together, 16.4% had a female householder with no husband present, and 42.7% were non-families. 36.1% of all households were made up of individuals and 12.9% had someone living alone who was 65 years of age or older. The average household size was 2.28 and the average family size was 2.98.
In the city, the population was spread out with 25.0% under the age of 18, 8.1% from 18 to 24, 31.3% from 25 to 44, 21.7% from 45 to 64, and 13.9% who were 65 years of age or older. The median age was 36 years. For every 100 females, there were 90.8 males. For every 100 females age 18 and over, there were 86.8 males.
The median income for a household in the city was $34,730, and the median income for a family was $40,688. Males had a median income of $29,685 versus $26,291 for females. The per capita income for the city was $19,674. About 9.8% of families and 12.8% of the population were below the poverty line, including 19.0% of those under age 18 and 9.0% of those age 65 or over.
Rensselaer New York neighborhoods include: Bath-on-Hudson, Capitol View, Fiddlers Lane, Hampton Manor, Lape Road, Lower North Greenbush, Oak Hill, Rensselaer, Sherwood & Woodland Park, Valley View Boulevard, Van Allen