We broad-band (BV(RI)c) linear polarimetric observations of the stars located toward a young open cluster Stock 8. The mean polarisation and polarisation angles values are found to be 2.19±0.52%, 2.27±0.77%, 2.33±0.65%, 2.12±0.62% and 162±9 degree, 162±6 degree, 159±6 degree, 160±8 degree in the B, V, Rc, and Ic bands respectively. The peak mean polarisation observed in the R-band is consistent with the fact that the aligned dust grains towards Stock 8 are responsible for the origin of polarisation. The small dispersion in the polarisation angle might be due to the uniform alignment of dust grains and hence uniform magnetic field orientation. The mean value of maximum polarisation (Pmax) and the wavelength (λmax) at which maximum polarisation observed are found to be 2.23±0.46% and 0.58±0.10μm, respectively. The estimated mean value of λmax indicates that the average size of the dust grains towards the cluster is nearly similar to that for the general diffuse interstellar medium. Polarisation efficiency of the dust grains towards Stock 8 is similar to that observed towards NGC 1931 but less than that of NGC 1893. The observed less polarisation efficiency could be due to variations in the dust grain grain properties and/or their alignment efficiency along the line of sight towards Stock 8. We have used both optical color-color diagram and Stokes plane to find the cluster members.