How Many People Are Named Izaac?
An estimated 2,767 people in the United States have the first name Izaac. It is almost exclusively a male name. The average bearer is 17 years old, and Izaac peaked in popularity in 2009 with 151 births that year.
Below you will find a full statistical profile of Izaac 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 Izaac paired with any surname.
Key Insights
- Izaac is a modern name. With an average bearer age of just 17, it has gained most of its popularity in recent years.
Estimated Living Americans
2,767
About 1 in 123,872 people in the U.S.
Rarity
Rare
Predicted Gender
Male
100.0% confidence
Average Age
17
years old
Peak Year
2009
151 births
Total Registered
2,799
since 1880
Gender Distribution for Izaac
Izaac is almost exclusively a male name. Out of 2,799 total births registered, 100.0% were male.
Izaac as a male name
Ranked #2,678 in 2024
49 male births in 2024
Peak: 2009 (151 births)
Izaac: Popularity Over Time
SSA records for Izaac span from the 1970s to the 2020s, covering 6 decades of naming data. The most popular decade for this name was the 2010s, when 1,120 babies were registered. Izaac has declined significantly from its peak in the 2010s. Recent registrations are a fraction of what they were at the name's height.
Izaac by Decade
How has Izaac 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.
Izaac by State
Birth registrations for Izaac span all 20 states and territories in the SSA database. The highest counts are in California, Texas, Florida. The lowest are in Kansas, Idaho, Georgia. On average, about 69 Izaacs were registered per state.
Izaac + Last Name Combinations
How many people share a full name with Izaac as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Izaac
Other first names starting with I with a similar number of bearers.
Izaac: Questions and Answers
How many people in the U.S. are named Izaac?
We estimate approximately 2,767 people named Izaac 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 123,872 Americans share this first name.
Is Izaac a common name?
Izaac is classified as "Rare" and is more popular than 94.9% of all first names in the SSA database. A total of 2,799 births have been registered with this name since 1880.
When was Izaac most popular?
Izaac reached peak popularity in 2009, when 151 babies were given this name. The average age of a living person named Izaac is approximately 17 years old, reflecting when the name was most commonly given.
Is Izaac a male name?
Izaac is predominantly male. 100.0% of people with this name are male. See the gender breakdown above for full details.
How many Izaac Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Izaac Smith, Izaac Johnson, Izaac 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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