Maize cultivation reached approximately to the Tropic of Cancer beyond which lived the hunter-gathering Coahuiltecan people.
[2] Spanish settlement of Aldama began in 1785 when arrival of 76 families comprising 293 persons from the Mexican state later known as Guerrero.
A Catholic mission called San Vicente del Platanal was established to convert the local Indian people, wean them away from their semi-nomadic livestyle, and concentrate them into settlements.
Aldama is bordered by the municipalities of Soto La Marina to the north, Altamira to the south, Casas and González to the west, and the Gulf of Mexico to the east.
The northwestern corner of Aldama is at the southern extremity of the mountain range known as the Sierra de Tamaulipas.
Among the products are oysters, huachinango (red snapper), snook, tarpon, shrimp, crab, tilapia, and sea trout.