Liam is a distinctive girls' name in United States, ranking #4829 in 2025 with 28 recorded births. This places Liam in the top 28% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2017 with 38 births ranking #3960. In 2025, approximately 1 in every 57,402 girls born was named Liam. STABLE Recent data shows the name is currently stable.
Liam is an Irish short form of William and carries the same broad meaning of determined or resolute protection. It has become one of the defining boys' names of the modern era.
The name rose from Irish use into worldwide popularity and later became especially dominant in the United States. Its success comes from how easily it combines heritage, brevity, and warmth.