Ulster is a town in Ulster County, New York, United States. The population was 12,327 at the 2010 census.
According to the United States Census Bureau, the town has a total area of 28.9 square miles (75 km), of which, 26.8 square miles (69 km) of it is land and 2.1 square miles (5.4 km) of it (7.20%) is water.
The east town line is formed by the Hudson River, and the west part of the town borders the City of Kingston.
Esopus Creek flows northward through the center of the town.
As of the 2010 United States Census, there were 12,327 people. 90.2% were White, 3.1% were African American, 0.3% were Native American, 2.2% were Asian, 0.0% were Pacific Islander and 2.6% were of two or more races. Hispanic or Latino people of any race were 5.4% of the population.
As of the 2000 United States Census, there were 12,544 people, 4,850 households, and 3,278 families in the town. The population density was 467.9/sqmi (180.7/km²). There were 5,239 housing units at an average density of 195.4/sqmi (75.5/km²). The racial makeup of the town was 93.44% White, 2.89% African American, .17% Native American, 1.56% Asian, 0.06% Pacific Islander, 0.36% from other races, and 1.52% from two or more races. Hispanic or Latino of any race were 2.45% of the population.
There were 4,850 households out of which 30.5% had children under the age of 18 living with them, 52.2% were married couples living together, 10.7% had a female householder with no husband present, and 32.4% were non-families. 26.8% of all households were made up of individuals and 12.4% had someone living alone who was 65 years of age or older. The average household size was 2.44 and the average family size was 2.96.
The Town population contained 23.5% under the age of 18, 6.3% from 18 to 24, 28.1% from 25 to 44, 24.4% from 45 to 64, and 17.7% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 91.5 males. For every 100 females age 18 and over, there were 87.9 males.
The median income for a household in the town was $43,707, and the median income for a family was $51,095. Males had a median income of $38,655 versus $26,146 for females. The per capita income for the town was $22,069. About 5.9% of families and 9.0% of the population were below the poverty line, including 11.2% of those under age 18 and 7.9% of those age 65 or over.