The 83rd Legislature, 1st Called Session, enacted S.B. 2 (PlanS172). The districts are identical to the interim plan, ordered by the U.S. District Court for the Western District of Texas, used to elect members in 2012 to the Texas Senate. This plan is in effect for the 84th Legislature (2015-2016).
Texas has 31 state senate districts. Each district has an ideal 2010 census population of 811,147.