Kazuko
Borrowed from Japanese かずこ (Kazuko).
Every Kazuko since 1915 — 398 of them. Popularity, births, and rankings for each year, from official Social Security records.
The story of Kazuko
Kazuko is not currently in use for newborns in the United States — fewer than five babies received the name in 2025. Its story lives in the historical record below.
Since 1915, 398 American babies have been named Kazuko. Its peak came in 1927, when 63 newborns received the name — the signature sound of the 1920s.
The chart above shows the full history: the popularity view (births per 1,000 babies) is the honest comparison across generations, since total US births have changed enormously since 1880. Switch to the rank view to see where Kazuko stood among all girls' names in any year, or use the compare tool to plot it against other names.
Kazuko year by year
Every year since 2001, and five-year steps back to 1880. Rank is within each sex.
| Year | Girls | Girls rank |
|---|---|---|
| 2025 | — | — |
| 2024 | — | — |
| 2023 | — | — |
| 2022 | — | — |
| 2021 | — | — |
| 2020 | — | — |
| 2019 | — | — |
| 2018 | — | — |
| 2017 | — | — |
| 2016 | — | — |
| 2015 | — | — |
| 2014 | — | — |
| 2013 | — | — |
| 2012 | — | — |
| 2011 | — | — |
| 2010 | — | — |
| 2009 | — | — |
| 2008 | — | — |
| 2007 | — | — |
| 2006 | — | — |
| 2005 | — | — |
| 2004 | — | — |
| 2003 | — | — |
| 2002 | — | — |
| 2001 | — | — |
| 2000 | — | — |
| 1995 | — | — |
| 1990 | — | — |
| 1985 | — | — |
| 1980 | — | — |
| 1975 | — | — |
| 1970 | — | — |
| 1965 | — | — |
| 1960 | — | — |
| 1955 | — | — |
| 1950 | — | — |
| 1945 | 5 | #4,901 |
| 1940 | — | — |
| 1935 | 12 | #2,501 |
| 1930 | 14 | #2,370 |
| 1925 | 15 | #2,437 |
| 1920 | 13 | #2,666 |
| 1915 | 5 | #4,613 |
| 1910 | — | — |
| 1905 | — | — |
| 1900 | — | — |
| 1895 | — | — |
| 1890 | — | — |
| 1885 | — | — |
| 1880 | — | — |
Famous people named Kazuko
- Kazuko Hironaka Soccer player · b. 1950
Ranked by global fame across Wikipedia editions (Pantheon project, MIT).
Frequently asked questions
What does the name Kazuko mean?
Borrowed from Japanese かずこ (Kazuko).
How popular is the name Kazuko in 2025?
Kazuko did not appear in the 2025 Social Security data, which means fewer than five babies received the name that year.
How many people are named Kazuko?
398 babies have been named Kazuko in the United States since 1915, based on Social Security card applications.
When was the name Kazuko most popular?
Kazuko peaked in 1927, when 63 newborns received the name.
Is Kazuko a boy or girl name?
Kazuko is overwhelmingly a girl's name — 100% of babies with the name.
Is the name Kazuko rising or falling?
Kazuko has been roughly stable over the past decade.
Who are famous people named Kazuko?
Well-known people named Kazuko include Kazuko Hironaka (soccer player).