Declining since 1993, #5,399 for boys today.
Popularity of Dillion since 1979
Babies named Dillion per year in U.S. Social Security records.
Data table (by decade)
| Decade | Boys |
|---|---|
| 1970s | 6 |
| 1980s | 171 |
| 1990s | 2,001 |
| 2000s | 1,020 |
| 2010s | 337 |
| 2020s | 120 |
Meaning & origin
Dillion is a modern respelling of the more common Dillon, which itself is an anglicized Irish surname. The name first appeared in U.S. records in 1979 and saw its peak popularity in 1992, when it ranked highest among recorded births. Since 1993, its usage has steadily declined, and by 2025 it ranked 5399, with about 1 in 100,475 boys receiving the name. The variant spelling with two L's gives it a distinct look while maintaining the familiar sound of Dillon. Though it has not appeared in any top state rankings, its use has been scattered across the country. As a contemporary twist on a traditional surname, Dillion fits in with other late-20th-century invented spellings of established names.
Dillion is a modern respelling of Dillon, which itself is an anglicized form of the Irish surnames Ó Duilleáin or Mac Duilleáin. These names are derived from a personal name possibly meaning 'little blind one' or related to the word 'dílis' meaning 'faithful'. The name has been used in the United States since the late 20th century, gaining modest popularity in the 1990s.
Nicknames & variants
Nicknames: Dill, Dilly
Sibling names for Dillion
Names that share Dillion's style, for a brother or sister.
