Troy is located on the western edge of Rensselaer County and on the eastern bank of the Hudson River. Troy has close ties with the nearby cities of Albany and Schenectady, forming a region popularly called the Capital District. The city is one of the three major centers for the Albany-Schenectady-Troy Metropolitan Statistical Area (MSA), the metro area has a population of 850,957. Troy is home to Rensselaer Polytechnic Institute, Russell Sage College, Hudson Valley Community College and the Emma Willard School, and was the hometown of Uncle Sam.
As of the census of 2000, there were 49,170 people, 19,996 households, and 10,737 families residing in the city. The population density was 4,721.8 people per square mile (1,823.7/km²). There were 23,093 housing units at an average density of 2,217.6/sq mi (856.5/km²). The racial makeup of the city was 80.22% White, 11.41% African American, 0.28% Native American, 3.49% Asian, 0.04% Pacific Islander, 2.20% from other races, and 2.35% from two or more races. Hispanic or Latino of any race were 4.33% of the population. According the Census Bureau, the largest self-reported ethnic groups in Troy are: Irish (23%), Italian (13%), German (11%), French (8%), English (7%), and Polish (5%).
There were 19,996 households out of which 27.0% had children under the age of 18 living with them, 32.6% were married couples living together, 16.3% had a female householder with no husband present, and 46.3% were non-families. 36.6% of all households were made up of individuals and 12.6% had someone living alone who was 65 years of age or older. The average household size was 2.26 and the average family size was 2.97.
In the city the population was spread out with 22.1% under the age of 18, 17.6% from 18 to 24, 28.5% from 25 to 44, 18.1% from 45 to 64, and 13.7% who were 65 years of age or older. The median age was 32 years. For every 100 females there were 98.0 males. For every 100 females age 18 and over, there were 96.0 males.
The median household income was $29,844, and the median income for a family was $38,631. Males had a median income of $30,495 versus $25,724 for females. The per capita income for the city was $16,796. About 14.3% of families and 19.1% of the population were below the poverty line, including 25.0% of those under age 18 and 9.5% of those age 65 or over.