Arlington, Texas is 51% larger than Irving, Texas.
Area: 175 km2 calculated
Irving is a city located in the U.S. state of Texas within Dallas County. According to a 2012 estimate from the U.S. Census Bureau, the city population was 225,427 making it the thirteenth most populous city in Texas. Wikipedia
Area: 265 km2 calculated
Arlington is a city in the U.S. state of Texas, within the Dallas–Fort Worth–Arlington metropolitan area and Tarrant County. According to the U.S. Wikipedia