Meaning not yet researched.
Casimer: US boys given the name each year, 1880 to 2025, from Social Security card applications. 0 in 2025. Its best rank was #510 in 1917.
US births per year · SSA card applications
Fewer than five US boys were given it in 2025. It peaked at #510 in 1917. No US babies were recorded with the name Casimer in 2025.
Baby name · US data 1880–2025
Given to fewer than five US boys in 2025; it peaked at #510 in 1917.
Hover, tap or use the arrow keys for any year. Years with fewer than five babies of a sex are not published by SSA and show as zero.
Casimer: US boys given the name each year from 1880 to 2025. 0 boys in 2025. Peak: #510 in 1917 · most boys in one year: 135 (1918).
Fewer than five US boys were named Casimer in 2025, so it does not appear in that year’s SSA list for boys. Its best rank for boys was #510, reached in 1917. The most boys given the name in a single year was 135, in 1918. For comparison, it was unranked (under five boys) in 2015 and #1,753 in 1950.
Social Security card records list Casimer in 65 years of the 146 from 1880 to 2025, starting in 1895 with 7 babies. In all, 1,895 US babies have been given the name, all of them boys. Its busiest decade was the 1910s, with 767 babies named Casimer.
Over the 10 years from 2016 to 2025, 5 US boys were named Casimer; the busiest of those years was 2017, with 5.
Related spellings in the SSA files include Casimir (5,248 babies since 1880). Rarer spellings such as Kazimer are summarised on this page.
Meaning not yet researched.
We publish a meaning only with a cited source and a confidence label, and never generate one. Meanings are being researched for the most common names first.
Rare spellings summarised here: Kazimer (23).
Numbers are all-time US births. Links come from Wikidata’s “said to be the same as” (P460, CC0) and our spelling rule: at most two letters different, with the same sound pattern.
No nicknames listed for Casimer in the open dataset we use.
Source: carltonnorthern/nicknames (Apache-2.0).
Births and national rank for each year SSA lists the name, newest first.
| Year | Girls | Girls rank | Boys | Boys rank |
|---|---|---|---|---|
| 2017 | — | — | 5 | #12,608 |
| 2009 | — | — | 5 | #12,784 |
| 1999 | — | — | 6 | #8,862 |
| 1980 | — | — | 6 | #5,619 |
| 1971 | — | — | 7 | #4,025 |
| 1969 | — | — | 6 | #4,004 |
| 1965 | — | — | 7 | #3,283 |
| 1964 | — | — | 5 | #4,130 |
| 1958 | — | — | 7 | #3,317 |
| 1957 | — | — | 9 | #2,849 |
| 1956 | — | — | 8 | #3,005 |
| 1955 | — | — | 8 | #3,000 |
| 1954 | — | — | 11 | #2,476 |
| 1953 | — | — | 8 | #2,939 |
| 1952 | — | — | 10 | #2,545 |
| 1951 | — | — | 8 | #2,870 |
| 1950 | — | — | 18 | #1,753 |
| 1949 | — | — | 12 | #2,242 |
| 1948 | — | — | 11 | #2,342 |
| 1947 | — | — | 16 | #1,930 |
| 1946 | — | — | 7 | #2,951 |
| 1945 | — | — | 14 | #1,862 |
| 1944 | — | — | 13 | #2,004 |
| 1943 | — | — | 19 | #1,646 |
| 1942 | — | — | 16 | #1,810 |
| 1941 | — | — | 15 | #1,829 |
| 1939 | — | — | 13 | #1,972 |
| 1938 | — | — | 9 | #2,509 |
| 1937 | — | — | 20 | #1,535 |
| 1936 | — | — | 13 | #1,971 |
| 1935 | — | — | 9 | #2,558 |
| 1934 | — | — | 12 | #2,148 |
| 1933 | — | — | 14 | #1,921 |
| 1932 | — | — | 26 | #1,360 |
| 1931 | — | — | 17 | #1,781 |
| 1930 | — | — | 25 | #1,467 |
| 1929 | — | — | 30 | #1,298 |
| 1928 | — | — | 50 | #964 |
| 1927 | — | — | 35 | #1,231 |
| 1926 | — | — | 50 | #965 |
| 1925 | — | — | 57 | #891 |
| 1924 | — | — | 47 | #1,035 |
| 1923 | — | — | 84 | #706 |
| 1922 | — | — | 73 | #781 |
| 1921 | — | — | 102 | #632 |
| 1920 | — | — | 111 | #593 |
| 1919 | — | — | 94 | #625 |
| 1918 | — | — | 135 | #515 |
| 1917 | — | — | 127 | #510 |
| 1916 | — | — | 105 | #558 |
| 1915 | — | — | 102 | #558 |
| 1914 | — | — | 80 | #555 |
| 1913 | — | — | 50 | #629 |
| 1912 | — | — | 30 | #805 |
| 1911 | — | — | 25 | #611 |
| 1910 | — | — | 19 | #682 |
| 1909 | — | — | 14 | #765 |
| 1908 | — | — | 6 | #1,239 |
| 1907 | — | — | 10 | #880 |
| 1906 | — | — | 7 | #1,025 |
| 1905 | — | — | 8 | #939 |
| 1901 | — | — | 7 | #868 |
| 1900 | — | — | 9 | #914 |
| 1899 | — | — | 6 | #954 |
| 1895 | — | — | 7 | #890 |
About the data: counts are Social Security card applications for US births, for names given to at least five babies of a sex in a year (SSA, names.zip, public domain). Ranks follow SSA’s own order: most births first, ties alphabetical. Files retrieved 2026-10-05 (checksum on our sources page).