The average altitude is 184 metres (604 feet) above sea level.
The city covers a total area of 99.5 square kilometres (258 square miles).
Arlington is the fiftieth-most populous city in the United States, the seventh-most populous city in the state of Texas, and the largest city in the state that is not a county seat.
An early white settlement (1840), on an Indian council site, was called Bird’s Fort.
In the Republic of Texas 1843 signed a peace treaty with nine Indian tribes at what is now Arlington.
The city itself was laid out by railroad men in 1876 and named after General Robert E. Lee’s Arlington House in Arlington County, Virginia.
Arlington falls in the Cfa (humid subtropical) region of the Köppen climate classification system which is a climate zone characterized by hot, humid summers and mild to cool winters. The highest recorded temperature was 113 °F (45 °C) in 1980.
The lowest recorded temperature was −8 °F (−22 °C) in 1899.
European settlement in the Arlington area dates back at least to the 1840s.
Arlington is the headquarters of American Mensa, the largest and oldest “High IQ Society” in the world.
Arlington and Bad Königshofen, Germany have been sister cities since 1952.
