Marylou vs Mary

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

Name A

Marylou

Girl name · Rank #4881

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Name B

Mary

Girl name · Rank #132

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Which name is more popular?

Metric Marylou Mary
Current Rank #4881 #132
Total Births (all years) 13,084 4,139,160
Peak Year 1942 1921
Peak Year Births 376 73,984
Peak Decade 1940ss 1920ss
Gender Girl Girl
First Recorded Year 1898 1880

Births by Decade

Decade Marylou Mary
1880ss — 91,668
1890ss 12 131,138
1900ss 54 161,504
1910ss 313 478,636
1920ss 1,251 701,756
1930ss 2,621 572,997
1940ss 3,141 640,070
1950ss 2,128 625,609
1960ss 1,598 355,238
1970ss 536 126,254
1980ss 517 95,862
1990ss 356 75,713
2000ss 209 46,310
2010ss 228 25,683
2020ss 120 10,722

Recent Annual Births (2014–present)

Year Marylou Mary
2014 24 2,636
2015 25 2,642
2016 21 2,526
2017 34 2,424
2018 11 2,369
2019 23 2,239
2020 22 2,229
2021 20 2,100
2022 26 2,116
2023 25 2,081
2024 27 2,196

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, 1898–2024.

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