Arkansas State University (also known as A-State) is a public research university in Jonesboro, Arkansas. It is the flagship campus of the Arkansas State University System and the second largest university by enrollment. It was founded in 1909 and is located atop 1,376 acres (5.6 km2) on Crowley's Ridge. Arkansas State has Sun Belt rivalries with all West Division schools (Little Rock, Louisiana, Louisiana-Monroe, Texas State, and UT Arlington). Their primary Sun Belt rivals are Little Rock, Louisiana-Monroe, and Louisiana.