Casimer
Every Casimer since 1895 — 1,895 of them. Popularity, births, and rankings for each year, from official Social Security records.
The story of Casimer
Casimer 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 1895, 1,895 American babies have been named Casimer. Its peak came in 1918, when 135 newborns received the name — the signature sound of the 1910s.
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 Casimer stood among all boys' names in any year, or use the compare tool to plot it against other names.
Casimer year by year
Every year since 2001, and five-year steps back to 1880. Rank is within each sex.
| Year | Boys | Boys rank |
|---|---|---|
| 2025 | — | — |
| 2024 | — | — |
| 2023 | — | — |
| 2022 | — | — |
| 2021 | — | — |
| 2020 | — | — |
| 2019 | — | — |
| 2018 | — | — |
| 2017 | 5 | #12,608 |
| 2016 | — | — |
| 2015 | — | — |
| 2014 | — | — |
| 2013 | — | — |
| 2012 | — | — |
| 2011 | — | — |
| 2010 | — | — |
| 2009 | 5 | #12,784 |
| 2008 | — | — |
| 2007 | — | — |
| 2006 | — | — |
| 2005 | — | — |
| 2004 | — | — |
| 2003 | — | — |
| 2002 | — | — |
| 2001 | — | — |
| 2000 | — | — |
| 1995 | — | — |
| 1990 | — | — |
| 1985 | — | — |
| 1980 | 6 | #5,619 |
| 1975 | — | — |
| 1970 | — | — |
| 1965 | 7 | #3,283 |
| 1960 | — | — |
| 1955 | 8 | #3,000 |
| 1950 | 18 | #1,753 |
| 1945 | 14 | #1,862 |
| 1940 | — | — |
| 1935 | 9 | #2,558 |
| 1930 | 25 | #1,467 |
| 1925 | 57 | #891 |
| 1920 | 111 | #593 |
| 1915 | 102 | #558 |
| 1910 | 19 | #682 |
| 1905 | 8 | #939 |
| 1900 | 9 | #914 |
| 1895 | 7 | #890 |
| 1890 | — | — |
| 1885 | — | — |
| 1880 | — | — |
Frequently asked questions
How popular is the name Casimer in 2025?
Casimer 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 Casimer?
1,895 babies have been named Casimer in the United States since 1895, based on Social Security card applications.
When was the name Casimer most popular?
Casimer peaked in 1918, when 135 newborns received the name.
Is Casimer a boy or girl name?
Casimer is overwhelmingly a boy's name — 100% of babies with the name.
Is the name Casimer rising or falling?
Casimer has been roughly stable over the past decade.