The survey on the amount of circulated coins which was conducted by the Ministry of Finance in the Meiji period revealed that 6,332,619,404 one-mon iron coins were minted in total, and the amount of one-mon iron coins minted in and after the Meiwa era was especially high as shown by the following figures: 2,262,589 kanmon (2,262,589,000 coins) in Kameido, 1,422,782 kanmon (1,422,782,000 coins) in Fushimi, 690,500 kanmon (690,500,000 coins) in Hitachiota, and so on.
鉄一文銭の総鋳造高は明治時代の大蔵省による流通高の調査により、6,332,619,404枚とされ、中でも明和年間以降の鋳造高が特に多く、亀戸では2,262,589貫文（2,262,589,000枚）、伏見1,422,782貫文（1,422,782,000枚）、常陸太田690,500貫文（690,500,000枚）などとなっている。