Val Verde County is a county located on the southern Edwards Plateau in the U.S. state of Texas. The 2020 population is 47,586. Its county seat is Del Rio. The Del Rio micropolitan statistical area includes all of Val Verde County. Val Verde, which means "green valley", was named for a battle of the Civil War. In 1862, soldiers of Sibley's Brigade took part in the Texas invasion of New Mexico Territory, where they captured several artillery pieces at the Battle of Val Verde.