PROBLEM TO BE SOLVED: To predict future passenger flow with high accuracy by reflecting a change in the route population and a change in the economic activity level of the route. SOLUTION: The passenger flow prediction device of the present invention calculates the past passenger flow from one boarding station to each of a plurality of getting-off stations for each age group, and the past for each age group in the station area of the boarding station. Based on the past population flow calculated by acquiring the future population for each age group in the station area based on the population of the station, and the future population from the boarding station to each of the multiple disembarking stations based on the acquired future population. It is characterized by having a passenger flow forecasting unit that calculates passenger flow for each age group. [Selection diagram] Fig. 5
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