Dillion
- US rank
- #5,399
- Syllables
- 2
- Peak
- #539 in 1992
17 babies were named Dillion in the US in 2025. It has dropped 1,481 places in five years.
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US births per million boys, 1979–2025
Similar names
Popularity: U.S. Social Security Administration (babies with 5+ births per year).
Did you know?
A few things about Dillion you might not know, from US birth records. Handy for convincing a partner, or a grandparent.
- How commonAbout 1 in every 100,000 baby boys born in the US in 2025 was named Dillion, 17 babies in all. In a typical school of 500 kids, your Dillion would very likely be the only one.
- HistoryDillion first shows up in US birth records in 1979, the first year at least 5 babies got it. It has been in use for 46 years since.
- Best yearIt was far more popular in 1992, when it ranked #539. Today it's #5,399, so it could be due a comeback.
- Then vs nowDillion was 7.6× more common in 2000 than it is today. In 2000 it was given to about 1 in 13,175 baby boys; in 2025, about 1 in 100,000.
- TrendDillion has slipped 1,481 places over the last five years and now sits at #5,399. Good news if you want a familiar name that fewer kids will share.
About the name Dillion
Dillion is a boy name of Celtic and Irish origin. It has 7 letters and 2 syllables, starting with D and ending in “-ion”. US birth records list Dillion for boys from 1979 to 2025, in 47 of those 47 years. Its best year was 1992, when it ranked #539 among boy names. In 2025 it ranked #5,399, with 17 babies.
Origin:Celtic namesIrish names
| Decade | Babies per million | About 1 in |
|---|---|---|
| 1970s | 3.5 | 285,714 boys |
| 1980s | 9.1 | 110,132 boys |
| 1990s | 103 | 9,728 boys |
| 2000s | 51 | 19,474 boys |
| 2010s | 18 | 55,835 boys |
| 2020s | 12 | 86,455 boys |
More Celtic boy names
- Unisex name: Owen · well-born
- Unisex name: Logan · little hollow
- Unisex name: Rowan · little red-haired one
- Unisex name: Nolan · descendant of Nuallán
- Unisex name: Cameron · crooked nose
- Boy name: Ian · God is gracious
- Unisex name: Gael · a Gael
- Boy name: Arthur · possibly bear
Questions about the name Dillion
What is the origin of the name Dillion?
Dillion has Celtic, Irish roots in our records. Other Celtic names include Owen, Logan, Rowan.
Is Dillion a boy or girl name?
Dillion is a boy name.
How popular is the name Dillion?
Dillion ranked #5,399 for US boys in 2025, given to 17 babies. Its best year was 1992 (#539).