Louise vs Lou

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

Name A

Louise

Girl name · Rank #538

Full profile →
Name B

Lou

Girl name · Rank #2524

Full profile →

Which name is more popular?

Metric Louise Lou
Current Rank #538 #2524
Total Births (all years) 335,882 34,043
Peak Year 1921 1954
Peak Year Births 9,180 1,495
Peak Decade 1920ss 1950ss
Gender Girl Girl
First Recorded Year 1880 1880

Births by Decade

Decade Louise Lou
1880ss 9,596 1,364
1890ss 15,174 1,283
1900ss 22,862 1,261
1910ss 67,973 2,550
1920ss 82,895 3,930
1930ss 49,859 5,165
1940ss 38,664 4,722
1950ss 25,853 9,084
1960ss 10,893 3,037
1970ss 2,918 767
1980ss 1,965 177
1990ss 1,295 65
2000ss 1,035 85
2010ss 2,489 255
2020ss 2,411 298

Recent Annual Births (2014–present)

Year Louise Lou
2014 201 22
2015 243 29
2016 313 35
2017 339 30
2018 340 39
2019 428 40
2020 417 43
2021 460 54
2022 462 62
2023 513 69
2024 559 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.

← Compare different names