Olmito is a census-designated place in Cameron County, Texas, United States. Olmito is Spanish for “little elm.” It is part of the Brownsville–Harlingen Metropolitan Statistical Area. It is the self-described “mesquite capital of the world.”
There were 322 housing units at an average density of 480.6/sq mi. The median income for a household in the CDP was $13,333, and the median income for a family was $15,000. The climate in this area is characterized by hot, humid summers and generally mild to cool winters. According to the Köppen Climate Classification system, Olmito has a humid subtropical climate, abbreviated “Cfa” on climate maps.
Olmito is served by the Los Fresnos Consolidated Independent School District. In addition, South Texas Independent School District operates magnet schools that serve the community.