Systems and methods to identify taxonomical classifications of target content for prospective audience are disclosed. Exemplary implementations may: receive, via a client computing platform, an audience definition for a prospective audience; identify a set of the users based on the psychological profiles that include similar psychological parameter values as indicated by the audience definition; correlate one or more combinations of content parameter values with the prospective audience based on the interaction information characterizing interactions between the set of the users and the content parameter values that characterize the pieces of content that the set of the users interacted with; identify a set of prospective content, from the pieces of content with taxonomical classifications stored in the electronic storage, for the prospective audience based on the correlated one or more combinations of the content parameter values and the taxonomical classifications of the pieces of content stored in the electronic storage.