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Olivia and Liam are America's #1 baby names for 2025, per the Social Security Administration. See the full top 10 boys and girls, with birth counts and what changed.

Which baby names climbed the most from 2024 to 2025? Among top-100 names, Cooper surged for boys and Eloise, Clara and Lucia rose fastest for girls, per SSA data.

Which top-100 baby names dropped the most from 2024 to 2025? Christian and Kai slid for boys; Addison, Natalie and Luna fell fastest for girls, per SSA data.

Across more than a century of Social Security data, James and Mary are the most-given US baby names of all time. See the all-time top 5 for boys and girls.

Olivia and Liam top the US chart, but state lists vary: Emma is #1 for girls across Texas, New York and Utah. How baby names differ by state in 2025, from SSA data.

From Mary and John to Olivia and Liam: a tour of the top US baby names by decade, 1880 to today, with the #1 names of the 1950s, 1980s and 2000s, from SSA data.