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).
Camden is down from its peak but still widely used. All-time it's been given to 89,064 U.S. babies, the 256th most common name by sound today, peaking at 5,698 in 2013, with 2,579 in 2025.
By sound, Camden also includes the spellings Kamden, Camdyn, Kamdyn.
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).