The degree of popularity of places such as facilities is appropriately estimated in consideration of user's visits. The server 10 is a place popularity degree estimation system that estimates the degree of popularity of a facility. The server 10 is a post data acquisition unit 12 for acquiring post data posted from a user, and the post data relates to a facility to be estimated and a user who has posted the post data visits the facility to be estimated It is located in the post data judgment part 13 which judges whether it is something which shows that it has done, the counting part 14 which counts post data about the facility of the estimation target according to the determination, and the mesh including the facility of the estimation target Estimated popularity level estimation section 16 for estimating the popularity level of the facility to be estimated based on the number of people information acquisition section 15 for obtaining the number of people information indicating the number of people and the number of people indicated by the counted value and the number of people information And an output unit 17 that outputs information indicating the degree of popularity.
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