Meaning: Its source is a Welsh expression meaning "Son of the sea."

Languages: This boy's name is used in English.

Popularity: The name Dillon ranked 185th in popularity for males of all ages in a sample of 2000-2003 Social Security Administration statistics and 964th in popularity for males of all ages in a sample of the 1990 US Census.

This name first made its appearance on state popularity lists of the 1990s, and has been trending upward in usage ever since.