The crystal structure of the title compound, [CoCl(2)(C(6)H(12)N(2)S)(2)], consists of monomer units of a Co(II) atom coordinated to two 1-propylimidazolidine-2-thione ligands and to two chloride ions. The heterocyclic thione ligand is monodentate and coordinated to the metal through the thione S atom. The environment around the Co(II) atom is a slightly distorted tetrahedron. The Co-S bond lengths are 2.341 (2) and 2.330 (2) A, and the Co-Cl bond lengths are 2.234 (2) and 2.238 (2) A. The most important point of distortion is the S-Co-S bond angle of only 97.83 (8) degrees. Intramolecular classical hydrogen bonds are found between the chloride ions and the N-H groups. Additionally, intra- and intermolecular non-classical hydrogen bonds are found.