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This paper presents the distribution model of population influx according to the migration distance and its moving time to new housing development area by empirical studies with real subscription data of recent Housing Project in Korea. GIS program and EasyFitXL software is used for fitting the distribution of population influx. The influx rate is highest in the administrative district located in the housing project, and becomes smaller as the distance from project site being farther. The 25% of population influx is located in around 7㎞, and 50% is in about 10㎞, and there is little influx out of 40㎞ and 60minutes from the project site. The influx rate curve forms a concave Dagum distribution which is not decreased monotonically, and the type of housing subscription does not affect the influx rate curve. It is the spatial distance not the time distance which immigrants consider as a important factor in migration into the new Housing Development Area. This paper is expected to be helpful to make policy-decision about developing extra infrastructure development, and the several urban, transportation, and social issues caused by inter-regional population movements to new housing development area.