Masterpiece Generator Name Generator
How popular is the name Isac?
Births per year, rank history and how many Isacs are alive today.
Isac (male) is a rare spelling of the boys' name Isaac in England and Wales, ranked 3256th in 2025 and given to 6 babies. This spelling of the name peaked in 2011, when 13 babies were given the name, the 1688th most popular that year. It has declined since 2011; the 2025 figure is roughly 46% of its peak.
Across all spellings of the name, the Isaac you are most likely to meet is around 11 years old. Half of all Isaacs born in England and Wales are between 8 and 19, and there are at least 53,000 of them alive today. If you walk into a room of 100 males, there's roughly a 16% chance that at least one of them will be called Isaac.
How many babies are named Isac each year?
Includes all spellings: Isac, Isaac. Figures before 1996 are estimates.
Where does the Isac spelling rank?
Where does the Isaac spelling rank?
Where this data comes from
Figures from 1996 onwards are the Office for National Statistics' annual baby-name registrations for England and Wales, which record every name given to three or more babies in a year. Figures before 1996 are estimates: the ONS published only top-100 rankings at ten-year intervals back to 1904, so counts for those years are modelled from the rankings, calibrated against Douglas Galbi's long-run research into English name frequencies, and shown with an uncertainty band. Estimates of living bearers combine these birth figures with national life tables and ONS mid-year population estimates.
One limit worth naming: these figures count names as registered at birth. Anyone who changes their name later in life - including trans people, and anyone who adopts a different name by deed poll or simply by use - is not reflected here. Birth registrations record where a name began, not the name a person lives with.
Common questions
When was the name Isac most popular?
The most popular form of the name, Isaac, peaked in 2015, when 2,837 babies in England and Wales were given the name. The Isac spelling itself peaked in 2011, with 13 babies.
How many people are called Isac?
At least 53,000 people named Isac in any spelling born in England and Wales are alive today.
How old is the typical Isac?
Most living Isacs are between 8 and 19; the most common age is about 11.
Is Isac becoming more or less popular?
Well past its peak: today's figures are a fraction of the 2015 peak, though numbers have levelled off in recent years.