The population density was 1,954.7 persons per square mile (754.8/km²). There were 16,885 housing units, at an average density of 753.7 per square mile (291.0/km²). The racial makeup of the city was 89.35% White, 1.35% African American, 0.22% Native American, 2.38% Asian, 0.01% Pacific Islander, 4.87% from other races, and 1.82% from two or more races. Hispanics and Latinos, of any race, were 9.64% of the population (8.4% Dominican, 5.7% Puerto Rican, 0.6% Guatemalan, 0.3% Ecuadorian, 0.3% Mexican, 0.3% Cuban). There were 16,532 households, of which 33.1% had children under the age of 18 living with them, 53.3% were married couples living together, 12.2% had a female householder with no husband present, and 30.2% were non-families. 25.3% of all households were made up of individuals and 11.6% had someone living alone who was 65 years of age or older. The average household size was 2.62 and the average family size was 3.17. In the city, the population was spread out with 24.7% under the age of 18, 7.3% from 18 to 24, 31.0% from 25 to 44, 21.6% from 45 to 64, and 15.3% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 91.9 males. For every 100 females age 18 and over, there were 87.0 males. The median income for a household in the city was $49,627, and the median income for a family was $59,831. Males had a median income of $41,693 versus $31,864 for females. The per capita income for the city was $22,305. About 5.8% of families and 7.4% of the population were below the poverty line, including 9.7% of those under age 18 and 7.7% of those age 65 or over. Historically, Methuen had a town meeting-selectmen form of government and was known as the Town of Methuen until it adopted a charter replacing its traditional town meeting and selectmen with a council and manager.