Meaning not yet researched.
Casimir: US boys given the name each year, 1880 to 2025, from Social Security card applications. 73 in 2025. Its best rank was #393 in 1917.
US births per year · SSA card applications
Peaked at #393 in 1917; #2,039 in 2025. Every baby recorded as Casimir in 2025 was a boy.
Baby name · US data 1880–2025
#2,039 for US boys in 2025. Its best year was 1917, at #393.
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.
Casimir: US boys given the name each year from 1880 to 2025. 73 boys in 2025. Peak: #393 in 1917 · most boys in one year: 220 (1919).
In 2025, 73 US boys were named Casimir, making it the 2,039th most common boys’ name of the year, up 338 places from #2,377 in 2024. That is 14 more than the 59 boys named Casimir in 2024. Its best rank for boys was #393, reached in 1917. The most boys given the name in a single year was 220, in 1919. For comparison, it was #3,307 in 2015 and #1,222 in 1950.
Social Security card records list Casimir in 131 years of the 146 from 1880 to 2025, starting in 1894 with 5 babies. In all, 5,248 US babies have been given the name, all of them boys. Its busiest decade was the 1920s, with 1,404 babies named Casimir.
Over the 10 years from 2016 to 2025, 430 US boys were named Casimir; the busiest of those years was 2025, with 73. In 2025 that was about 1 in 23,398 of the boys in SSA’s list for the year.
Among the states, Casimir ranked highest in Colorado in 2025, at #870 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Casimer (1,895 babies since 1880). Rarer spellings such as Casimiro, Kazimir and Kazimierz 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: Casimiro (1,084), Kazimir (344), Kazimierz (82), Kasimir (80), Casimier (35), Cazimir (16), Kasimer (5), Casimere (5).
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 Casimir in the open dataset we use.
Source: carltonnorthern/nicknames (Apache-2.0).
US boys. Rank within each state. SSA leaves out states where fewer than five boys got the name, so 48 are not listed.
| State | Births 2025 | Rank 2025 | Rank 2015 |
|---|---|---|---|
| Colorado | 5 | #870 | — |
| Pennsylvania | 5 | #1,268 | — |
| New York | 8 | #1,322 | — |
Births and national rank for each year SSA lists the name, newest first.
| Year | Girls | Girls rank | Boys | Boys rank |
|---|---|---|---|---|
| 2025 | — | — | 73 | #2,039 |
| 2024 | — | — | 59 | #2,377 |
| 2023 | — | — | 58 | #2,363 |
| 2022 | — | — | 58 | #2,414 |
| 2021 | — | — | 40 | #3,029 |
| 2020 | — | — | 29 | #3,662 |
| 2019 | — | — | 29 | #3,733 |
| 2018 | — | — | 31 | #3,546 |
| 2017 | — | — | 24 | #4,244 |
| 2016 | — | — | 29 | #3,700 |
| 2015 | — | — | 34 | #3,307 |
| 2014 | — | — | 31 | #3,467 |
| 2013 | — | — | 37 | #3,010 |
| 2012 | — | — | 23 | #4,274 |
| 2011 | — | — | 22 | #4,389 |
| 2010 | — | — | 24 | #4,128 |
| 2009 | — | — | 22 | #4,455 |
| 2008 | — | — | 28 | #3,754 |
| 2007 | — | — | 25 | #4,027 |
| 2006 | — | — | 15 | #5,559 |
| 2005 | — | — | 23 | #3,961 |
| 2004 | — | — | 23 | #3,884 |
| 2003 | — | — | 14 | #5,311 |
| 2002 | — | — | 23 | #3,685 |
| 2001 | — | — | 11 | #6,080 |
| 2000 | — | — | 16 | #4,612 |
| 1999 | — | — | 13 | #5,075 |
| 1998 | — | — | 14 | #4,683 |
| 1997 | — | — | 19 | #3,616 |
| 1996 | — | — | 10 | #5,593 |
| 1995 | — | — | 10 | #5,554 |
| 1994 | — | — | 12 | #4,837 |
| 1993 | — | — | 13 | #4,477 |
| 1992 | — | — | 17 | #3,628 |
| 1991 | — | — | 9 | #5,577 |
| 1990 | — | — | 20 | #3,073 |
| 1989 | — | — | 17 | #3,339 |
| 1988 | — | — | 11 | #4,196 |
| 1987 | — | — | 11 | #4,006 |
| 1986 | — | — | 6 | #6,046 |
| 1985 | — | — | 15 | #3,093 |
| 1984 | — | — | 17 | #2,715 |
| 1983 | — | — | 10 | #3,920 |
| 1982 | — | — | 15 | #2,988 |
| 1981 | — | — | 14 | #3,053 |
| 1980 | — | — | 16 | #2,848 |
| 1979 | — | — | 10 | #3,842 |
| 1978 | — | — | 9 | #3,901 |
| 1977 | — | — | 13 | #3,065 |
| 1976 | — | — | 9 | #3,756 |
| 1975 | — | — | 5 | #5,582 |
| 1974 | — | — | 12 | #2,975 |
| 1973 | — | — | 10 | #3,262 |
| 1972 | — | — | 10 | #3,189 |
| 1971 | — | — | 10 | #3,180 |
| 1970 | — | — | 11 | #2,916 |
| 1969 | — | — | 10 | #2,890 |
| 1968 | — | — | 18 | #1,900 |
| 1967 | — | — | 11 | #2,494 |
| 1966 | — | — | 7 | #3,283 |
| 1965 | — | — | 15 | #2,099 |
| 1964 | — | — | 12 | #2,433 |
| 1963 | — | — | 16 | #2,051 |
| 1962 | — | — | 11 | #2,530 |
| 1961 | — | — | 17 | #2,002 |
| 1960 | — | — | 16 | #2,051 |
| 1959 | — | — | 13 | #2,315 |
| 1958 | — | — | 22 | #1,686 |
| 1957 | — | — | 15 | #2,105 |
| 1956 | — | — | 18 | #1,897 |
| 1955 | — | — | 24 | #1,574 |
| 1954 | — | — | 30 | #1,386 |
| 1953 | — | — | 35 | #1,262 |
| 1952 | — | — | 31 | #1,352 |
| 1951 | — | — | 29 | #1,381 |
| 1950 | — | — | 35 | #1,222 |
| 1949 | — | — | 29 | #1,350 |
| 1948 | — | — | 30 | #1,326 |
| 1947 | — | — | 23 | #1,562 |
| 1946 | — | — | 27 | #1,357 |
| 1945 | — | — | 38 | #1,041 |
| 1944 | — | — | 29 | #1,237 |
| 1943 | — | — | 37 | #1,120 |
| 1942 | — | — | 44 | #1,010 |
| 1941 | — | — | 32 | #1,171 |
| 1940 | — | — | 36 | #1,093 |
| 1939 | — | — | 31 | #1,172 |
| 1938 | — | — | 42 | #980 |
| 1937 | — | — | 42 | #968 |
| 1936 | — | — | 39 | #1,014 |
| 1935 | — | — | 46 | #931 |
| 1934 | — | — | 51 | #881 |
| 1933 | — | — | 74 | #696 |
| 1932 | — | — | 56 | #855 |
| 1931 | — | — | 72 | #721 |
| 1930 | — | — | 93 | #635 |
| 1929 | — | — | 88 | #657 |
| 1928 | — | — | 98 | #618 |
| 1927 | — | — | 104 | #611 |
| 1926 | — | — | 114 | #582 |
| 1925 | — | — | 123 | #558 |
| 1924 | — | — | 163 | #485 |
| 1923 | — | — | 152 | #497 |
| 1922 | — | — | 168 | #477 |
| 1921 | — | — | 188 | #449 |
| 1920 | — | — | 206 | #413 |
| 1919 | — | — | 220 | #395 |
| 1918 | — | — | 179 | #444 |
| 1917 | — | — | 205 | #393 |
| 1916 | — | — | 181 | #414 |
| 1915 | — | — | 178 | #403 |
| 1914 | — | — | 106 | #469 |
| 1913 | — | — | 95 | #437 |
| 1912 | — | — | 67 | #481 |
| 1911 | — | — | 29 | #562 |
| 1910 | — | — | 17 | #732 |
| 1909 | — | — | 16 | #686 |
| 1908 | — | — | 24 | #514 |
| 1907 | — | — | 12 | #779 |
| 1906 | — | — | 13 | #682 |
| 1905 | — | — | 12 | #706 |
| 1904 | — | — | 6 | #1,085 |
| 1903 | — | — | 6 | #1,032 |
| 1902 | — | — | 8 | #874 |
| 1901 | — | — | 7 | #869 |
| 1900 | — | — | 7 | #1,063 |
| 1899 | — | — | 7 | #872 |
| 1897 | — | — | 5 | #1,091 |
| 1896 | — | — | 8 | #838 |
| 1895 | — | — | 6 | #997 |
| 1894 | — | — | 5 | #1,108 |
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).