In the crystal structure of the title salt, C6H8N+·C7H5O3 −, the anions and cations are linked by classical N—H⋯O hydrogen bonds. The anions are connected by pairs of C—H⋯O hydrogen bonds into inversion dimers and further linked by classical O—H⋯O hydrogen bonds. Weak π–π inter­actions [centroid–centroid distances = 3.740 (3) and 3.855 (3) Å] also occur. The dihedral angle between the CO2 − group and the benzene ring to which it is attached is 20.95 (8)°.

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