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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, about 82 miles northwest of Laredo and 45 miles north of the Mexican border. Route 83 intersects 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.