A system and method is disclosed for retail store marketing. A memory stores a database of existing customers of the retail store. The database includes a unique customer identification code for each customer. A memory stores a list of unique identification codes for prospective customers of the store who reside in a predetermined geographical area relative to the store. Circuitry compares the unique identification codes in the stored database of existing customers with the stored list of unique identification codes of prospective customers. Circuitry eliminates data from the list of prospective customers relating to the store's existing customers, such that a non-customer database is produced for use in marketing.