The change in the grain size distribution during grain growth has been investigated for recrystallized aluminum specimens, some of which contain a small amount of chromium. The one- and two-dimensional distributions were measured experimentally. Further, the grain diameter distribution, which is one of the three-dimensional grain size distributions corresponding directly to grain growth, was estimated by the method suggested in the previous paper using the values obtained for the one-dimensional distribution. This method was based on an assumption of the log-normal distribution of the grain diameter (the equivalent volume diameter) D; the distribution of this grain diameter was clearly defined by the geometric mean grain diameter D_g and the standard deviation of lnD, lnσ_g. As a result, the change in the grain diameter distribution during grain growth was different from that in the one- or the two-dimensional distribution. The value of D_g of pure Al increased remarkably during the annealing in this experiment, while that of specimens containing Cr varied similary with annealing time and then it became unchanged or slightly decreased. The standard deviation of the logarithm of the grain diameter, lnσ_g decreased with the increase in D_g, or increased as the value of D_g stagnated or decreased slightly. The results were discussed briefly in relation to abnormal grain growth.