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A study of the partial-wave content of the γp→η′p reaction in the fourth resonance region is presented, which has been prompted by new measurements of polarization observables for that process. Using the Bonn–Gatchina partial-wave formalism, the incorporation of new data indicates that the N(1895)1/2−, N(1900)3/2+, N(2100)1/2+, and N(2120)3/2− are the most significant contributors to the photoproduction process. New results for the branching ratios of the decays of these more prominent resonances to Nη′ final states are provided; such branches have not been indicated in the most recent edition of the Review of Particle Properties. Based on the analysis performed here, predictions for the helicity asymmetry E for the γp→η′p reaction are presented.