Carrizo Springs is a city in and the county seat of Dimmit County, Texas, United States. The population was 5,655 at the 2000 census. Carrizo Springs lies along U.S. Route 83, approximately 82 miles northwest of Laredo and 45 miles north of the Mexican border. Route 83 intersects U.S. Route 277 there. The name "Carrizo Springs" derives from similarly named springs in the area; the name is Spanish for a type of grass once common in the area. Founded in 1865 by settlers from Atascosa County, Carrizo Springs is the oldest community in the county. The name of the town comes from the local springs, which were named by the Spanish for the cane grass that once grew around them. It is the oldest town in Dimmit County. Artesian wells in the area are known for their pure, clean water. This water is often exported from Carrizo Springs for use as holy water.