Olmito
Olmito is off U.S. highways 77 and 83 two miles northwest of Brownsville in southern Cameron County. The Olmito post office opened in 1905. A station was established in the area in 1911, when the St. Louis, Brownsville, and Mexico Railway was constructed. In 1914 the community had a population estimated at fifty, a post office, a grocery store, and a cotton gin. The next year a school was also in operation in the town. The post office closed in 1918 and reopened in 1925. In 1933 Olmito had a population estimated at seventy-five and seven businesses. The population remained at seventy-five through 1948, when there were two businesses in the area. read more at TSHA