How to read the band →
Solid line = floor (spellings that unambiguously belong to the group). Shaded band up to the dashed edge = ceiling (the most it could reach if every ambiguous spelling counted here).
Casey
Casey has been climbing in recent years. All-time it's been given to 309,823 U.S. babies, the 227th most common name by sound today, peaking at 11,332 in 1990, with 3,368 in 2025.
By sound, Casey also includes the spellings Kasey, Kacey, Kacie, Kaci, Kaycee, Kayce, Kacy, Casie, Kasie.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).