How Many People Are Named Isac?
An estimated 2,733 people in the United States have the first name Isac. It is almost exclusively a male name. The average bearer is 24 years old, and Isac peaked in popularity in 2006 with 148 births that year.
Below you will find a full statistical profile of Isac as a first name in the United States, including gender data, a year-by-year popularity timeline going back to 1880, a decade breakdown, and state-by-state birth registrations. You can also check how many people share the full name Isac paired with any surname.
Estimated Living Americans
2,733
About 1 in 125,413 people in the U.S.
Rarity
Rare
Predicted Gender
Male
100.0% confidence
Average Age
24
years old
Peak Year
2006
148 births
Total Registered
3,180
since 1880
Gender Distribution for Isac
Isac is almost exclusively a male name. Out of 3,180 total births registered, 100.0% were male.
Isac as a male name
Ranked #4,108 in 2024
26 male births in 2024
Peak: 2006 (148 births)
Isac: Popularity Over Time
SSA records for Isac span from the 1880s to the 2020s, covering 15 decades of naming data. The most popular decade for this name was the 2000s, when 1,210 babies were registered. Isac has declined significantly from its peak in the 2000s. Recent registrations are a fraction of what they were at the name's height.
Isac by Decade
How has Isac tracked across different eras? The table below groups all SSA birth registrations into 10-year periods, with separate male and female counts. The colored bar shows each decade's share relative to the peak.
Isac by State
Birth registrations for Isac span all 16 states and territories in the SSA database. The highest counts are in California, Texas, Illinois. The lowest are in Pennsylvania, Alabama, Oregon. On average, about 84 Isacs were registered per state.
Isac + Last Name Combinations
How many people share a full name with Isac as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Isac
Other first names starting with I with a similar number of bearers.
Isac: Questions and Answers
How many people in the U.S. are named Isac?
We estimate approximately 2,733 people named Isac are alive in the United States today. This is based on SSA birth records from 1880 to 2024, adjusted for mortality using CDC life tables. About 1 in 125,413 Americans share this first name.
Is Isac a common name?
Isac is classified as "Rare" and is more popular than 94.9% of all first names in the SSA database. A total of 3,180 births have been registered with this name since 1880.
When was Isac most popular?
Isac reached peak popularity in 2006, when 148 babies were given this name. The average age of a living person named Isac is approximately 24 years old, reflecting when the name was most commonly given.
Is Isac a male name?
Isac is predominantly male. 100.0% of people with this name are male. See the gender breakdown above for full details.
How many Isac Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Isac Smith, Isac Johnson, Isac Williams. You can also search any combination on our homepage.
Where does this data come from?
Our estimates use Social Security Administration birth records (1880 to 2024), adjusted for survival using CDC 2023 life tables broken down by sex. The U.S. population figure (342,754,338) is from the Census Bureau's July 2025 estimate. Full methodology.
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