The Co(II) atom (site symmetry ) in the title complex, [Co(C(7)H(3)N(2)O(6))(2)(CH(3)OH)(4)], exists within an octa-hedral O(6) donor set defined by two O-monodentate 3,5-dinitro-benzoate anions and four methanol O atoms. An intra-molecular O(m)-H⋯O(c) (m = methanol and c = carbon-yl) hydrogen bond leads to the formation of an S(6) ring. In the crystal, centrosymmetrically related mol-ecules associate via further O(m)-H⋯O(c) hydrogen bonds, leading to linear supra-molecular chains propagating along the a-axis direction.