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).
Judy
Judy is now well below its former popularity. All-time it's been given to 399,915 U.S. babies, the 2,024th most common name by sound today, peaking at 21,957 in 1947, with 114 in 2025.
By sound, Judy also includes the spellings Judi, Judie.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).