Meaning and history
From Japanese 慶 (kei) meaning “celebration,” 敬 (kei) meaning “respect,” 啓 (kei) meaning “open, begin,” or 恵 (kei) meaning “favour, benefit,” combined with 子 (ko) meaning “child”; other kanji combinations are also possible.
20062006: 15 births, rank #7,868
2007: 17 births, rank #7,394
2008: 13 births, rank #8,965
2009: 12 births, rank #9,379
2010: 19 births, rank #6,641
20112011: 16 births, rank #7,436
2012: 24 births, rank #5,557
2013: 16 births, rank #7,372
2014: 11 births, rank #9,517
2015: 13 births, rank #8,447
20162016: 16 births, rank #7,230
2017: 23 births, rank #5,517
2018: 18 births, rank #6,521
2019: 18 births, rank #6,414
2020: 28 births, rank #4,648
20212021: 25 births, rank #5,091
2022: 24 births, rank #5,309
2023: 26 births, rank #4,999
2024: 23 births, rank #5,443
20252025: 17 births, rank #6,546
In 2025, 17 babies were recorded with the name Keiko, ranking #6,546 among girls.