Abstract
It is important to know how many people really exsist in an urban district, when we face to make a program, such as, of an urban facility, of an urban redevelopment, or of countermeasure in case of an earthquake. For purpose of estimating de facto population in two central commercial districts of Osaka, Shinsaibashi and Higashi-Umeda, pedestrian traffic was counted at the each point of cordon line of the survey area. In this survey, a sample survey method by intermittent survey time was used to reduce the number of surveyors. In conclusion, several typical patterns of time serial variation of population in districts and blocks specified by locational character were found. Maximum population was 36000, 1100pns/ha as population density, in Shinsaibashi and was 27000, 2500pns/ha, in Higashi-Umeda.
