Latin Lucanus, a man from Lucania; associated with lux, "light" — from lucania; light. The Latin form of Luke, the gospel writer and physician.
Lucas ranks 10th among American boys in 2025, with 10,228 born that year. Its best year was 2017, when 13,044 babies were given the name, ranking 11th. The typical living American called Lucas is about 14 years old today. It is relatively most common in Rhode Island, where it accounts for 0.81% of births.
Source: US Social Security Administration, national and state name files, 2025 release, and the Office for National Statistics for England and Wales. Etymology researched and written by our editors. Living-population and median-age figures are our own estimates, described in the methodology.