Computers in Columbia, IllinoisList of Companies in Computers category in the city of Columbia, Illinois.Share this page: American Wholenet Columbia, Computers; 251 Southwoods Ctr, Columbia, IL, 62236-2466; (618) 281-0462Wholenet Columbia, Computers; 251 Southwoods Ctr, Columbia, IL, 62236-2466; (618) 281-60601