Guilderland is a town in Albany County, New York, United States. In the 2010 census, the town had a population of 35,303. The town is named for the Gelderland province in the Netherlands.
The town of Guilderland is on the central-northwest border of the county. It is just west of Albany, the capital of the U.S. state of New York.
According to the United States Census Bureau, the town has a total area of 58.7 square miles (152 km), of which, 57.9 square miles (150 km) of it is land and 0.8 square miles (2.1 km) of it (1.31%) is water.
The town borders Schenectady County, New York, including the towns of Princetown and Rotterdam on the northern and western edges. It also borders the towns of Berne, Colonie, Bethlehem, and New Scotland and the city of Albany.
There are several ZIP codes in Guilderland, including 12084 (Guilderland), 12085 (Guilderland Center), 12203 (Albany), 12009 (Altamont), 12303 and 12306 (Schenectady), 12159 (Slingerlands), and 12186 (Voorheesville).
Two interstate highways, I-87 and I-90 run through Guilderland, meeting in the city of Albany, north of Crossgates Mall a large mall on the edge of Guilderland. US 20 also runs through the town.
As of the 2010 census, there were 35,303 people and 14,205 households residing in the town. The racial makeup of the town was 86.21% White, 3.41% African American, 0.14% Native American, 7.49% Asian, 0.04% Pacific Islander, 0.01% American Indian and Alaska Native, 0.93% from other races, and 1.76% from two or more races. Hispanic or Latino of any race were 3.2% of the population.
There were 13,422 households out of which 31.6% had children under the age of 18 living with them, 54.2% were married couples living together, 8.5% had a female householder with no husband present and 34.7% were non-families. 28.5% of all households were made up of individuals and 8.6% had someone living alone who was 65 years of age or older. The average household size was 2.40 and the average family size was 3.00.
In the town, the population was spread out with 24.1% under the age of 18, 6.0% from 18 to 24, 30.9% from 25 to 44, 25.9% from 45 to 64, and 13.2% who were 65 years of age or older. The median age was 39 years. For every 100 females, there were 92.4 males. For every 100 females age 18 and over, there were 89.4 males.
The median income for a household in the town was $58,669 and the median income for a family was $68,472. Males had a median income of $48,742 versus $34,796 for females. The per capita income for the town was $29,508. About 2.4% of families and 4.1% of the population were below the poverty line, including 2.8% of those under age 18 and 4.0% of those age 65 or over. 64.9% of workers are employed in the private-sector, and 29.1% are government employees.