There is disclosed an information processing system for effectively using information indicating the state of a store visitor at the time of a visit. The system includes a recognizer that recognizes a store visitor and a transporter at the time of a visit by analyzing video information captured by an outside-the-store camera provided outside a store. The system also includes a determiner that determines a moving range of each store visitor recognized by the recognizer. Furthermore, the system includes a deriving unit that derives a trading area of the store based on a determination result of the determiner.