2-Amino-5-chloro­pyridinium 4-hydroxy­benzoate

In the title salt, C(5)H(6)ClN(2) (+)·C(7)H(5)O(3) (−), the carboxyl­ate mean plane of the 4-hydroxy­benzoate anion is twisted by 7.16 (9)° from the attached ring. In the crystal structure, the cations and anions are linked via O—H⋯O and N—H⋯O hydrogen bonds, as well as C—H⋯O contacts, forming a three-dimensional network. In addition, weak π–π inter­actions involving the benzene and pyridinium rings, with centroid-to-centroid distances of 3.8941 (9) Å, are observed.