Hallyn is a very rare girls' name that peaked in 2024 and has grown less common since.
Hallyn is a girl name. In 2025 it ranked #11,285 for girl births in the United States (and #19,026 across all names), given to 8 babies. Hallyn first appears in 2024 and peaked in 2024 (15 births).
Girls named Hallyn per year · hover for count and girls rank · Source: U.S. Social Security Administration, national data 2024–2025 · U.S.+territories from SSA territory files (1998–2025)