A communication system (10; 10a) configured to comprise: a base transceiver station that controls sectors constituting a location registration area that is a unit area for registering a location; mobile stations located in the sectors; a radio network controller that controls the base transceiver station; an exchange; and an information analyzing apparatus that is communicably connected with the radio network controller via the exchange, wherein the radio network controller comprises: a location registration signal receiver that receives location registration signals which are transmitted from the mobile stations and are signals requesting location registration in the location registration area; and a signal number counting module that counts the number of the location registration signals for each sector during a unit time, wherein the exchange comprises a location registration signal processing module that receives location registration signals requesting location registration in each location registration area from the mobile stations and, based on the location registration signals thus received, counts the number of location registrations that is the number of mobile stations registered in each location registration area, and wherein the information analyzing apparatus comprises: a population distribution calculation module that calculates population distribution information on population distribution that includes at least information corresponding to the number of the location registration signals, based on the number of the location registration signals; a registration number consideration module that modifies information included in the population distribution information and corresponding to the number of location registration signals for each sector constituting the location registration area, based on the number of location registrations; and an output module that outputs the population distribution information after the modification. a base transceiver station that controls sectors constituting a location registration area that is a unit area for registering a location; mobile stations located in the sectors; a radio network controller that controls the base transceiver station; an exchange; and an information analyzing apparatus that is communicably connected with the radio network controller via the exchange, wherein the radio network controller comprises: a location registration signal receiver that receives location registration signals which are transmitted from the mobile stations and are signals requesting location registration in the location registration area; and a signal number counting module that counts the number of the location registration signals for each sector during a unit time, a location registration signal receiver that receives location registration signals which are transmitted from the mobile stations and are signals requesting location registration in the location registration area; and a signal number counting module that counts the number of the location registration signals for each sector during a unit time, wherein the exchange comprises a location registration signal processing module that receives location registration signals requesting location registration in each location registration area from the mobile stations and, based on the location registration signals thus received, counts the number of location registrations that is the number of mobile stations registered in each location registration area, and wherein the information analyzing apparatus comprises: a population distribution calculation module that calculates population distribution information on population distribution that includes at least information corresponding to the number of the location registration signals, based on the number of the location registration signals; a registration number consideration module that modifies information included in the population distribution information and corresponding to the number of location registration signals for each sector constituting the location registration area, based on the number of location registrations; and an output module that outputs the population distribution information after the modification. a population distribution calculation module that calculates population distribution information on population distribution that includes at least information corresponding to the number of the location registration signals, based on the number of the location registration signals; a registration number consideration module that modifies information included in the population distribution information and corresponding to the number of location registration signals for each sector constituting the location registration area, based on the number of location registrations; and an output module that outputs the population distribution information after the modification.