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All around the world, 幸子 (Sachiko , 幸子 ) is quite a common dominantly feminine, but infrequently boy's first name. The forename 幸子 is characteristic of Japan, where it is quite a rare dominantly girly, but infrequently male name, Hong Kong, where it is quite a rare female name, and the United States, where it is a rare girly name. Measured by absolute frequency, this name is the most popular in China, Japan, and the United States. Much less frequently, 幸子 is the last name as well as the forename.