Casimer
A boy's name of Polish origin with 1,895 recorded U.S. births.
Meaning & Origin
Casimer peaked during early twentieth-century America, when 135 babies received this name in a single year (1918). That era was defined by heritage-rooted naming, and Casimer has since stepped out of the spotlight, giving it a vintage quality that many parents now find appealing.
Casimer is not in the current top 1,000 boy names nationally, making it an uncommon choice — though your state or community may differ.
Casimer is a boy's baby name of Polish origin, an anglicized form of Kazimierz, from the Slavic elements kazić meaning 'to destroy' and mir meaning 'peace' or 'world' — traditionally interpreted as 'proclaimer of peace.' Saint Casimir (1458–1484), patron saint of Poland and Lithuania, made this name beloved in Catholic tradition.
EtymologyShow more
Phonetically, Casimer belongs to a cluster of names characterized by their active, energetic ending — often found in English occupational-style names. At three syllables, it has a three-beat flow that carries a sense of formality and completeness.
Within the Polish naming tradition, names with similar sound structures often share underlying etymological patterns. Exploring Polish names on this site may surface connections that illuminate Casimer’s linguistic neighborhood.
At a Glance
Popularity Over Time
Casimer has 65+ years of history in the U.S., first appearing in 1895.
Popularity by Decade
| Decade | Births | Avg Rank | Trend |
|---|---|---|---|
| 2010s | 5 | #12604 | — |
| 2000s | 5 | #12783 | ▼ |
| 1990s | 6 | #8860 | — |
| 1980s | 6 | #5619 | ▼ |
| 1970s | 7 | #4024 | ▼ |
| 1960s | 18 | #3805 | ▼ |
| 1950s | 87 | #2751 | ▼ |
| 1940s | 123 | #2069 | ▼ |
| 1930s | 158 | #1922 | ▼ |
| 1920s | 639 | #910 | ▼ |
| 1910s | 767 | #605 | ▲ |
| 1900s | 61 | #947 | ▲ |
| 1890s | 13 | #922 | — |
The Story of Casimer
A Greatest Generation name
Peaking in 1918, Casimer is a name steeped in history. Boys named Casimer are most likely born between 1908 and 1928.
How rare is Casimer?
With 1,895 total births on record, Casimer remains a rare and distinctive pick.
The journey through the decades
First appeared in the records in 1895, peaked in the 1910s with 767 births that decade, and has since become a rare, vintage choice.
Casimer by the numbers
- Would fill 39 school buses
- Meeting one Casimer per day would take 5.2 years
Year-by-Year Data
View complete yearly data(65 years, 1895–2017)
| Year | Births | Rank |
|---|---|---|
| 2017 | 5 | #12604 |
| 2009 | 5 | #12783 |
| 1999 | 6 | #8860 |
| 1980 | 6 | #5619 |
| 1971 | 7 | #4024 |
| 1969 | 6 | #4005 |
| 1965 | 7 | #3282 |
| 1964 | 5 | #4129 |
| 1958 | 7 | #3318 |
| 1957 | 9 | #2849 |
| 1956 | 8 | #3005 |
| 1955 | 8 | #3000 |
| 1954 | 11 | #2476 |
| 1953 | 8 | #2939 |
| 1952 | 10 | #2545 |
| 1951 | 8 | #2870 |
| 1950 | 18 | #1753 |
| 1949 | 12 | #2242 |
| 1948 | 11 | #2343 |
| 1947 | 16 | #1930 |
Source: U.S. Social Security Administration. Showing years with 5+ recorded births.
Frequently Asked Questions
Is Casimer a boy's or girl's name?
When was Casimer most popular?
How popular is the name Casimer?
Explore More
Data source: U.S. Social Security Administration, 1895–2017