The city of Castroville is located in the county of Medina. It covers a total area of 6.5 sq. km. Industries related to aviation, liquor, finance, construction, apparel, information technology, commercial printing, pharmaceuticals, propane gas, pharmaceuticals, real estate and publishing, sheet metal and tourism contribute to the local economy in a positive way. Commercial spaces are utilized by recreation centers, campgrounds, service stations, wine stores and parks, enhance the financial viability of the city.