As of the census of 2000, there were 177,661 people, 76,650 households, and 40,164 families residing in the city, and the Knoxville Metropolitan Statistical Area had a population of 616,079. The population density was 724.6/km sq (1,876.7/mi sq). There were 84,981 housing units at an average density of 354.1/km sq (917.1/mi sq). The racial makeup of the city was 79.7% White, 16.2% African American, 0.31% Native American, 1.45% Asian, 0.03% Pacific Islander, 0.72% from Race (United States Census)other races, and 1.57% from two or more races. Hispanic or Latino of any race were 1.58% of the population. There were 76,650 households out of which 22.8% had children under the age of 18 living with them, 35.3% were Marriagemarried couples living together, 13.7% had a female householder with no husband present, and 47.6% were non-families. 38.3% of all households were made up of individuals and 11.4% had someone living alone who was 65 years of age or older. The average household size was 2.12 and the average family size was 2.84. In the city the population was spread out with 19.7% under the age of 18, 16.8% from 18 to 24, 29.5% from 25 to 44, 19.6% from 45 to 64, and 14.4% who were 65 years of age or older. The median age was 33 years. For every 100 females there were 90.0 males. For every 100 females age 18 and over, there were 86.3 males. The median income for a household in the city is $27,492, and the median income for a family is $37,708. Males had a median income of $29,070 versus $22,593 for females. The per capita income for the city is $18,171. About 14.4% of families and 20.8% of the population were below the poverty line, including 26.1% of those under age 18 and 12.0% of those age 65 or over. In 2006, Economic Research InstituteERI published an analysis that identified Knoxville as the most affordable U.S. city for new college graduates, based on the ratio of typical salary to cost of living.Economic Research Institute, Inc., http://www.erieri.com/index.cfm?FuseAction Source: http://en.wikipedia.org/wiki/Knoxville%2C_Tennessee