Zo is a rare variant of Zoe that peaked in 2017 and has grown less common since.
Zo is predominantly a girl name. In 2025 it ranked #14,930 among girls (6) and #10,686 among boys (7) — overall #14,304 across all names. The charts below show girls and boys separately.
Girls named Zo per year · hover for count and girls rank · Source: U.S. Social Security Administration, national data 1957–2025 · 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
Boys named Zo · 7 in 2025
Boys named Zo per year · hover for count and boys rank · Source: U.S. Social Security Administration, national data 1957–2025 · 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