Mexico, city (1990 pop. 11,290), seat of Audrain co., central Mo., in a farm area; inc. 1857. Prefabricated homes, firebrick, trailers, and ceramic tile are manufactured, and there are livestock markets and horse stables. Wheat, corn, and soybeans are grown. A saddle horse museum, the county historical society museum, and Missouri Military Academy are also in the city.