This paper provides an estimate of the average number density of dust particles accumulated around Mars. As investigated earlier, submicron‐sized grains (a<1 μm) are perturbed by electromagnetic forces and solar radiation pressure so that they do not stay close to the Keplerian orbit of the ejecting satellite. The lifetime of these particles in the vicinity of Mars ranges from a few days to a few hundred days. Their trajectories are contained in an approximately spherical volume. For larger grains (1 μm