Louie vs Lou

Side-by-side comparison of Louie and Lou — popularity rank, total births, peak decade, and historical trends from Social Security Administration data.

Name A

Louie

Boy name · Rank #574

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Name B

Lou

Girl name · Rank #2524

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Which name is more popular?

Metric Louie Lou
Current Rank #574 #2524
Total Births (all years) 30,507 34,043
Peak Year 2024 1954
Peak Year Births 497 1,495
Peak Decade 1920ss 1950ss
Gender Boy Girl
First Recorded Year 1880 1880

Births by Decade

Decade Louie Lou
1880ss 394 1,364
1890ss 441 1,283
1900ss 628 1,261
1910ss 2,784 2,550
1920ss 4,226 3,930
1930ss 3,482 5,165
1940ss 3,507 4,722
1950ss 3,437 9,084
1960ss 2,495 3,037
1970ss 1,771 767
1980ss 1,320 177
1990ss 1,134 65
2000ss 964 85
2010ss 1,907 255
2020ss 2,017 298

Recent Annual Births (2014–present)

Year Louie Lou
2014 173 22
2015 215 29
2016 236 35
2017 214 30
2018 237 39
2019 282 40
2020 314 43
2021 377 54
2022 369 62
2023 460 69
2024 497 70

Data Sources

Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications — National Data, ssa.gov/oact/babynames.
Source: SSA Annual Name Rankings, 1880–2024.

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