Troy is a city located in Metropolitan Detroit’s northern suburbs in Oakland County in the U.S. state of Michigan. The population was 80,980 at the 2010 census, making it the 11th-largest city in Michigan by population, and the largest city in Oakland County. Troy has become a business and shopping destination in the Metro Detroit area, with numerous office centers and the upscale Somerset Collection mall.
According to the United States Census Bureau, the city has a total area of 33.64 square miles (87.13 km), of which 33.47 square miles (86.69 km) is land and 0.17 square miles (0.44 km) is water. The latitude of Troy is 42.605 N, and the longitude is 83.15 W. The mean elevation is 748 ft (228 m).
According to a 2007 estimate, the median income for a household in the city was $84,330, and the median income for a family was $101,271. Males had a median income of $66,475 versus $41,026 for females. The per capita income for the city was $35,936. About 1.7% of families and 2.7% of the population were below the poverty line, including 2.2% of those under age 18 and 5.5% of those age 65 or over.
As of the census of 2010, there were 80,980 people, 30,703 households, and 22,443 families residing in the city. The population density was 2,419.5 inhabitants per square mile (934.2/km). There were 32,907 housing units at an average density of 983.2 per square mile (379.6/km). The racial makeup of the city was 74.1% White, 4.0% African American, 0.2% Native American, 19.1% Asian, 0.6% from other races, and 2.0% from two or more races. Hispanic or Latino of any race were 2.1% of the population.
There were 30,703 households of which 34.7% had children under the age of 18 living with them, 62.8% were married couples living together, 7.3% had a female householder with no husband present, 3.0% had a male householder with no wife present, and 26.9% were non-families. 23.4% of all households were made up of individuals and 9.6% had someone living alone who was 65 years of age or older. The average household size was 2.63 and the average family size was 3.14.
The median age in the city was 41.8 years. 23.8% of residents were under the age of 18; 6.7% were between the ages of 18 and 24; 24% were from 25 to 44; 31.6% were from 45 to 64; and 13.8% were 65 years of age or older. The gender makeup of the city was 49.3% male and 50.7% female.
From the census of 2000, there were 80,959 people, 30,018 households, and 21,883 families residing in the city. The population density was 2,413.9 people per square mile (932.0/km²). There were 30,872 housing units at an average density of 920.5 per square mile (355.4/km²). The racial makeup of the city was 82.30% White, 2.09% African American, 0.15% Native American, 13.25% Asian, 0.02% Pacific Islander, 0.36% from other races, and 1.82% from two or more races. 1.46% of the population is Hispanic or Latino of any race.
There were 30,018 households out of which 36.9% had children under the age of 18 living with them, 64.5% were married couples living together, 6.0% had a female householder with no husband present, and 27.1% were non-families. 22.8% of all households were made up of individuals and 7.8% had someone living alone who was 65 years of age or older. The average household size was 2.69 and the average family size was 3.23.
In the city, the population was spread out with 26.2% under the age of 18, 6.7% from 18 to 24, 29.8% from 25 to 44, 27.1% from 45 to 64, and 10.2% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 98.1 males. For every 100 females age 18 and over, there were 94.8 males.
From 1990 to 2000, of all of the municipalities in Oakland, Wayne, and Macomb counties, Troy had the highest numeric growth in the Asian population. It had 4,932 Asians according to the 1990 U.S. Census and 10,730 according to the 2000 U.S. Census, an increase of 5,798 Asians. The increase gave Troy the largest Asian-American population in the tri-county area, surpassing that of Detroit.