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Dillion
BoyMeaning of Dillion: Irish: 'faithful'
Dillion is a boy's name most strongly associated with Irish naming. It has 7 letters and 2 syllables, and it is a genuinely rare and unique choice — 5222nd most popular boys' name in the United States in 2025.
US rank 2025
#5222
17 babies in 2025
England & Wales 2024
—
Fewer than 3 babies or unlisted
US babies since 1880
3,661
First recorded 1979 · peak 1992
Trend
falling
Style: rare
Popularity over time
Gender split
100% boys · 0% girls, based on US, UK and international usage.
Origins & cultures
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