Calhan is a very rare variant of Callahan that peaked in 2022 and has since faded.
Calhan is a boy name. In 2025 it ranked #10,896 for boy births in the United States (and #22,492 across all names), given to 6 babies. Calhan was first reported in SSA data in 2015 and peaked in 2022 (11 births).
Boys named Calhan per year · hover for count and boys rank · Source: U.S. Social Security Administration, national data 2015–2025 · U.S.+territories from SSA territory files (1998–2025) · SSA publishes a name only in years it was given to at least 5 babies, so a name may have been in use before — or between — the years shown here