Arlington is a city in the U.S. state of Texas, located in Tarrant County. It is part of the Mid-Cities region of the Dallas–Fort Worth–Arlington metropolitan area, approximately 12 miles (19 km) east of downtown Fort Worth and 20 miles (32 km) west of downtown Dallas.
According to the United States Census Bureau, Arlington has a total area of 99.7 square miles (258 km); 96.5 square miles (250 km) of it was land, and 3.2 square miles (8.3 km) of it is water.
Johnson Creek, a tributary of the Trinity River, and the Trinity River itself, flow through Arlington.
As of the census of 2010, there were 365,438 people, 133,072 households, and 90,099 families residing in the city. The population density was 3,811 people per square mile (1,472/km²). There were 144,805 housing units at an average density of 1,510 per square mile (5,833/km²). The 2011 estimated racial makeup of the city (based on the 2010 census) was 59% White, 18.8% Black or African American, 6.8% Asian, 0.7% Native American, 0.1% Pacific Islander, 11.3% from other races, and 3.3% from two or more races. Hispanic or Latino of any race were 27.4% of the population.
There were 133,072 households out of which 40% had children under the age of 18 living in them, 48% were married couples living together, 15% had a female householder with no husband present, and 32% were non-families. 25% of all households were made up of individuals and 5% had someone living alone who was 65 years of age or older. The average household size was 2.7 and the average family size was 3.3.
In the city, the 2010 population was spread out with 31% under the age of 20, 8% from 20 to 24, 30% from 25 to 44, 23% from 45 to 64, and 8% who were 65 years of age or older. The median age was 32 years. For every 100 females, there were 104 males. For every 100 females age 18 and over, there were 94 males 18 and over.
The median income for a household in the city was estimated to be $50,655 in 2011. Individual males working full-time year-round had a median income of $41,059 versus $35,265 for females. The per capita income for the city was $25,317.
About 16% of Arlington families in general and 31% of female-headed families with no husband present were living below the poverty line. 20% of the Arlington population as a whole, including 28% of individuals under age 18 and 8% of those age 65 or over were living in poverty.
43% of Arlington renters and 28% of homeowners were paying 35% or more of their household income for housing costs in 2011.