In an urban area, including Seoul city, many people prefer to use taxi as one of the choices for fast, convenient and flexible transportation. Based on the data provided by one of the taxi service call companies, X, in Korea, this paper proposes a taxi passenger riding pattern analysis at Seoul city, Republic of Korea. Using a multidimensional analysis method, we analyze the data to obtain an area with high potential demands of taxi passengers, which we call "hotspot" area. The results show that "Teheran Valley" in Gangnam-gu and Dongdaemun market in Jung-gu and Jongno-gu had the biggest number of passengers compared to other areas. This information will be useful for the company to re-evaluate its current taxi fleet management, especially for the taxi's drivers in minimizing their idle time when searching for customers.
