Koji Popularity by Year
Follow Koji across every available national year. Rankings and birth counts remain separated by the source dataset’s girl and boy categories.
Koji birth-count history
The chart samples long histories for faster loading. The complete table below includes every recorded year.
Complete year-by-year record
| Year | Category | Births | Rank | Change from previous recorded year |
|---|---|---|---|---|
| 2025 | Boys | 34 | #3,379 | Up 821 places |
| 2024 | Boys | 25 | #4,200 | Down 726 places |
| 2023 | Boys | 33 | #3,474 | Up 615 places |
| 2022 | Boys | 26 | #4,089 | Up 847 places |
| 2021 | Boys | 19 | #4,936 | Up 1,684 places |
| 2020 | Boys | 12 | #6,620 | Down 807 places |
| 2019 | Boys | 15 | #5,813 | Up 223 places |
| 2018 | Boys | 14 | #6,036 | Up 302 places |
| 2017 | Boys | 13 | #6,338 | Down 2,562 places |
| 2016 | Boys | 28 | #3,776 | Up 1,513 places |
| 2015 | Boys | 17 | #5,289 | Up 444 places |
| 2014 | Boys | 15 | #5,733 | Down 752 places |
| 2013 | Boys | 18 | #4,981 | Up 1,020 places |
| 2012 | Boys | 14 | #6,001 | Down 56 places |
| 2011 | Boys | 14 | #5,945 | Down 1,428 places |
| 2010 | Boys | 21 | #4,517 | Up 1,283 places |
| 2009 | Boys | 15 | #5,800 | Down 1,260 places |
| 2008 | Boys | 21 | #4,540 | Up 670 places |
| 2007 | Boys | 17 | #5,210 | Up 1,694 places |
| 2006 | Boys | 11 | #6,904 | Down 2,273 places |
| 2005 | Boys | 18 | #4,631 | Up 1,182 places |
| 2004 | Boys | 13 | #5,813 | Down 542 places |
| 2003 | Boys | 14 | #5,271 | Up 124 places |
| 2002 | Boys | 13 | #5,395 | Up 1,050 places |
| 2001 | Boys | 10 | #6,445 | Down 1,405 places |
| 2000 | Boys | 14 | #5,040 | Up 2,834 places |
| 1999 | Boys | 7 | #7,874 | Down 1,560 places |
| 1998 | Boys | 9 | #6,314 | Up 822 places |
| 1996 | Boys | 7 | #7,136 | Down 2,628 places |
| 1995 | Boys | 13 | #4,508 | Up 4,292 places |
| 1994 | Boys | 5 | #8,800 | Down 4,686 places |
| 1992 | Boys | 14 | #4,114 | Up 1,828 places |
| 1991 | Boys | 8 | #5,942 | Down 949 places |
| 1990 | Boys | 10 | #4,993 | Up 1,948 places |
| 1989 | Boys | 6 | #6,941 | Down 515 places |
| 1988 | Boys | 6 | #6,426 | Down 1,094 places |
| 1986 | Boys | 7 | #5,332 | Up 453 places |
| 1985 | Boys | 6 | #5,785 | Down 3,172 places |
| 1984 | Boys | 18 | #2,613 | Up 798 places |
| 1983 | Boys | 12 | #3,411 | Up 2,974 places |
| 1982 | Boys | 5 | #6,385 | Down 135 places |
| 1980 | Boys | 5 | #6,250 | Down 1,453 places |
| 1975 | Boys | 6 | #4,797 | Down 607 places |
| 1974 | Boys | 7 | #4,190 | Up 911 places |
| 1973 | Boys | 5 | #5,101 | Down 1,757 places |
| 1972 | Boys | 9 | #3,344 | Up 364 places |
| 1926 | Boys | 6 | #3,708 | Up 489 places |
| 1925 | Boys | 5 | #4,197 | Up 110 places |
| 1922 | Boys | 5 | #4,307 | — |