How Many People Are Named Issac?
An estimated 21,735 people in the United States have the first name Issac. It is almost exclusively a male name. The average bearer is 26 years old, and Issac peaked in popularity in 2008 with 820 births that year.
Below you will find a full statistical profile of Issac 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 Issac paired with any surname.
Estimated Living Americans
21,735
About 1 in 15,770 people in the U.S.
Rarity
Uncommon
Predicted Gender
Male
99.9% confidence
Average Age
26
years old
Peak Year
2008
820 births
Total Registered
24,304
since 1880
Gender Distribution for Issac
Issac is almost exclusively a male name. Out of 24,304 total births registered, 99.9% were male.
Issac as a male name
Ranked #854 in 2024
283 male births in 2024
Peak: 2008 (820 births)
Issac as a female name
Ranked #9,458 in 1983
6 female births in 1983
Peak: 1976 (6 births)
Issac: Popularity Over Time
SSA records for Issac span from the 1880s to the 2020s, covering 15 decades of naming data. The most popular decade for this name was the 2000s, when 6,789 babies were registered. Issac has declined significantly from its peak in the 2000s. Recent registrations are a fraction of what they were at the name's height.
Issac by Decade
How has Issac 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.
Issac by State
Birth registrations for Issac span all 43 states and territories in the SSA database. The highest counts are in California, Texas, New York. The lowest are in Montana, Hawaii, Connecticut. On average, about 462 Issacs were registered per state.
Issac + Last Name Combinations
How many people share a full name with Issac as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Issac
Other first names starting with I with a similar number of bearers.
Issac: Questions and Answers
How many people in the U.S. are named Issac?
We estimate approximately 21,735 people named Issac 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 15,770 Americans share this first name.
Is Issac a common name?
Issac is classified as "Uncommon" and is more popular than 98.5% of all first names in the SSA database. A total of 24,304 births have been registered with this name since 1880.
When was Issac most popular?
Issac reached peak popularity in 2008, when 820 babies were given this name. The average age of a living person named Issac is approximately 26 years old, reflecting when the name was most commonly given.
Is Issac a male name?
Issac is predominantly male. 99.9% of people with this name are male. See the gender breakdown above for full details.
How many Issac Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Issac Smith, Issac Johnson, Issac 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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