Isobelle is a very rare variant of Isabella that peaked in 2008 and has grown less common since.
Isobelle is a girl name. In 2025 it ranked #12,419 for girl births in the United States (and #20,820 across all names), given to 7 babies. Isobelle was first reported in SSA data in 1914 and peaked in 2008 (8 births).
Girls named Isobelle per year · hover for count and girls rank · Source: U.S. Social Security Administration, national data 1914–2025 · 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