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).
Gia
Gia has been climbing in recent years. All-time it's been given to 22,839 U.S. babies, the 594th most common name by sound today, peaking at 1,204 in 2024, with 1,079 in 2025.
By sound, Gia also includes the spellings Giah.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).