William vs Mary

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

Name A

William

Boy name · Rank #10

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Name B

Mary

Girl name · Rank #131

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Metric William Mary
Current Rank #10 #131
Total Births (all years) 4,199,696 4,141,481
Peak Year 1947 1921
Peak Year Births 67,002 73,984
Peak Decade 1950s 1920s
Gender Boy Girl
First Recorded Year 1880 1880

Births by Decade

Decade William Mary
1880s 84,881 91,668
1890s 72,244 131,138
1900s 69,320 161,504
1910s 303,017 478,636
1920s 512,402 701,755
1930s 416,730 573,000
1940s 556,478 640,080
1950s 591,228 625,606
1960s 421,433 355,240
1970s 283,401 126,254
1980s 248,277 95,862
1990s 217,822 75,723
2000s 194,415 46,337
2010s 159,981 25,693
2020s 68,067 12,985

Recent Annual Births (2014–present)

Year William Mary
2014 16,851 2,637
2015 15,950 2,642
2016 15,810 2,526
2017 15,046 2,425
2018 14,646 2,369
2019 13,658 2,241
2020 12,676 2,230
2021 12,170 2,102
2022 11,356 2,119
2023 10,673 2,085
2024 10,647 2,219
2025 10,545 2,230

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, 1880–2025.

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