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).
Silas
Silas has been climbing in recent years. All-time it's been given to 84,615 U.S. babies, the 136th most common name by sound today, peaking at 5,378 in 2025, with 5,378 in 2025.
By sound, Silas also includes the spellings Sylas.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).