Meaning and history
Casimir is the English form of the Polish name Kazimierz, derived from the Slavic elements kaziti, meaning “to destroy,” and mirŭ, meaning “peace” or “world.” Four kings of Poland have borne the name, including Casimir III the Great, who greatly strengthened the Polish state in the 14th century, and it was also borne by Saint Casimir, a 15th-century Polish prince and patron saint of Poland and Lithuania. The name entered Western Europe through Germany, where it was used by some royalty.
20062006: 15 births, rank #5,525
2007: 25 births, rank #4,011
2008: 28 births, rank #3,744
2009: 22 births, rank #4,429
2010: 24 births, rank #4,099
20112011: 22 births, rank #4,356
2012: 23 births, rank #4,251
2013: 37 births, rank #2,998
2014: 31 births, rank #3,456
2015: 34 births, rank #3,299
20162016: 29 births, rank #3,681
2017: 24 births, rank #4,224
2018: 31 births, rank #3,524
2019: 29 births, rank #3,716
2020: 29 births, rank #3,653
20212021: 40 births, rank #3,021
2022: 58 births, rank #2,408
2023: 58 births, rank #2,362
2024: 59 births, rank #2,370
20252025: 73 births, rank #2,035
Casimir moved from #968 to #980 for boys between 1937 and 1938. Its highest annual birth count came in 1919, with 220 births.