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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).
Colton
Colton has dropped sharply from its peak but is still widely used. All-time it's been given to 197,194 U.S. babies, the 150th most common name by sound today, peaking at 8,392 in 2012, with 4,329 in 2025.
By sound, Colton also includes the spellings Kolton, Colten, Kolten, Coleton, Coltin.
Rising