In this manuscript we described the development and implementation of a Geographic Information System (GIS) that we used to analyze data from a study in which the number of overwintered boll weevils caught in pheromone traps was linked to the type of vegetation found in proximity to the traps. The use of the computer software described in this manuscript allowed us to view relationships between the tabular data (trap catches of overwintered weevils) and geographic data that could not otherwise be easily discerned.