Top Baby Names of 1921

What the Data Says About 1921

The Social Security Administration's national 1921 file shows 1,606,245 births concentrated in the top 100 boy and top 100 girl names, the segment of U.S. baby-name data released to the public for that year. The #1 boy name of 1921 was John, with 58,215 births registered nationally. The #1 girl name of 1921 was Mary, with 73,984 births nationally. The top 100 boys captured 796,713 births compared with 809,532 for the top 100 girls — consistent with the historical SSA pattern in which a smaller pool of boy names dominates a larger share of annual births while girl names are more evenly distributed.

1921 sits within a specific era of U.S. naming trends. Pre-1940 years are dominated by traditional biblical and English names — John, William, Mary, and Helen consistently occupy the top ranks, and the top 10 names account for a much larger share of all births than in later decades. John and Mary leading 1921 fits this broader cultural signature.

These rankings come directly from Social Security Administration card applications and represent approximately 96% of all U.S. births in 1921. Names with fewer than five occurrences nationally in 1921 are excluded from SSA's public file to protect privacy, meaning the true number of unique names given in 1921 is significantly larger than any public top-100 list can show. Each spelling variation is counted separately — Sophia and Sofia, Aiden and Ayden — so rankings reflect only the specific spelling filed on the SS card, not combined name pools. This page is provided for informational and research purposes only and does not constitute naming advice.