Noah was the most popular baby name for boys in the United States in 2013, knocking Jacob off the top spot after an epic 14-year run.
Data released by the Social Security Administration showed that Jacob had fallen to third place, while Liam was in second place. Mason and William completed the top five.
Sophia was the most popular baby name for girls for the third straight year. It was followed by Emma, Olivia, Isabella and Ava.
The rise of Noah and Liam highlights a trend toward more smooth-sounding baby names, said Laura Wattenberg, creator of Babynamewizard.com.
"You compare Jacob with all its hard, punchy consonants, versus Noah and Liam, you can really see where style is heading," she said.