This study focused on corrosion of cast iron and ductile iron pipes, which are mainly used as water pipes, and attempted to analyze the relationship between the corrosion and the aging of the pipes and the buried ground. For the analysis, we used the data of about 7,000 pipe body surveys of buried pipes in the 23 wards of Tokyo that have been conducted since 1987. As a result of this analysis, the pitting corrosion coefficient (𝑘), which indicates the corrosion strength of the buried ground, was quantified for each ground category. And the results of the pipe body survey demonstrated that weakly corrosive ground (Ground I) and strongly corrosive gorund (Ground II) were classified into western and eastern part of the 23 wards of Tokyo. In addition, the tendency of ground corrosiveness and pitting depth and the corrosion protection effect of polyethylene sleeves were also clarified. Furthermore, we visualized graphically that pitting corrosion of cast iron pipes progressed faster than that of ductile iron pipes. These new findings can be useful for pipeline renewal planning in the target area.