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Casie
GirlMeaning of Casie: Irish: 'vigilant or watchful'
Casie is a girl's name most strongly associated with Irish naming. It has 5 letters and 2 syllables, and it is a genuinely rare and unique choice — 12488th most popular girls' name in the United States in 2025.
US rank 2025
#12488
6 babies in 2025
England & Wales 2024
—
Fewer than 3 babies or unlisted
US babies since 1880
4,818
First recorded 1962 · peak 1987
Trend
stable
Style: rare
Popularity over time
Gender split
0% boys · 100% girls, based on US, UK and international usage.
Origins & cultures
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