Abstract
In contrast to the “Existence Probability” defined by the Ministry of Land, Infrastructure, Transport and Tourism, which indicates the possibility of existence of convenient-living facilities by population size, this study attempts to extend the model in terms of the number of facilities. In other words, this study attempts to clarify the “standard number of service establishments that can exist in a certain service industry under a certain population size. For the analysis, data on the number of population and the number of establishments in the industry were used, and a polynomial regression model was used to approximate the model. As a result, the barber shop and daycare center can operate multiple stores even with a population of 1,000, while a hamburger store requires a population of about 30,000. The results also showed the uneven distribution of facilities, using dental clinics and yakiniku (grilled meat) restaurants as examples. The results of this study can be used as a simple guide to determine the appropriate number of facilities for new store locations and facility reorganization at the time of forming a cooperative metropolitan area.