Meaning and history
Latinate feminine form of Louis. A notable bearer was the American novelist Louisa May Alcott (1832–1888), author of Little Women.
20062006: 119 births, rank #1,743
2007: 126 births, rank #1,726
2008: 124 births, rank #1,774
2009: 140 births, rank #1,602
2010: 163 births, rank #1,402
20112011: 197 births, rank #1,217
2012: 222 births, rank #1,119
2013: 245 births, rank #1,017
2014: 281 births, rank #954
2015: 303 births, rank #906
20162016: 347 births, rank #827
2017: 373 births, rank #752
2018: 386 births, rank #731
2019: 422 births, rank #688
2020: 383 births, rank #725
20212021: 424 births, rank #685
2022: 340 births, rank #822
2023: 346 births, rank #808
2024: 385 births, rank #732
20252025: 407 births, rank #694
Louisa rose from #733 to #697 for girls between 2024 and 2025. Its highest annual birth count came in 2021, with 424 births.