Tin sulfide (SnS) nanoparticles can be synthesized using a hydrothermal technique with desirable optoelectronic properties. In this study, an attempt is made to synthesize SnS nanoparticles at 170 ℃. As synthesized, SnS nanoparticles were characterized using X-ray diffraction analysis (XRD) and scanning electron microscopy equipped with energy dispersive spectroscopy (SEM–EDS). Analysis of XRD data suggests orthorhombic crystal structure of SnS nanoparticles with preferred orientation of the grains along (0 1 3) direction. The physical parameters, viz. crystallite size, lattice strain, and dislocation density were estimated for all the reflection peaks of XRD patterns using different models. EDS analysis suggests the existence of Sn and S elements with a ratio of 0.82 in the synthesized SnS nanoparticles.