1. A method comprising, by one or more computing devices of an online social network: receiving, from a mobile-client system of a first user of the online social network, geographic-location information associated with the mobile-client system; identifying a plurality of candidate place-entities associated with the online social network that correspond to the geographic-location information, wherein each candidate place-entity is associated with a particular geographic location; determining, for each candidate place-entity, a confidence score based on the geographic-location information associated with the mobile-client system and a location-probability distribution associated with the candidate place-entity, wherein the confidence score represents a probability that the first user is located at the candidate place-entity; and sending, to the mobile-client system of the first user, information associated with one or more of the candidate place-entities having a confidence score above a threshold confidence score.