Los Olmos was the first permanent settlement in Brooks County, located at the southwest corner of the El Paisano Land Grant, which was given to Ramon de la Garza about 1830 by the Mexican state of Tamaulipas. Situated near the main route to the Rio Grande, the village served a region originally settled by ranchers from northern Mexico. By 1880, it had a post office, stores, and a school that operated until 1945, and the schoolhouse was also the site of services conducted by traveling priests. As Falfurrias grew, Los Olmos began to decline, though descendants of its founders still reside in the area.