How Many People Are Named Isaac?
An estimated 296,602 people in the United States have the first name Isaac. While not in the top 50, it remains a well-known name ranking #167 overall. It is almost exclusively a male name. The average bearer is 22 years old, and Isaac peaked in popularity in 2007 with 10,287 births that year.
Below you will find a full statistical profile of Isaac 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 Isaac paired with any surname.
Key Insights
- While Isaac is overwhelmingly male, 774 female births have been registered with this name since 1880.
Estimated Living Americans
296,602
About 1 in 1,156 people in the U.S.
Rarity
Common
Predicted Gender
Male
99.8% confidence
Average Age
22
years old
Peak Year
2007
10,287 births
Total Registered
326,231
since 1880
Gender Distribution for Isaac
Isaac is almost exclusively a male name. Out of 326,231 total births registered, 99.8% were male.
Isaac as a male name
Ranked #40 in 2024
6,498 male births in 2024
Peak: 2007 (10,274 births)
Isaac as a female name
Ranked #14,107 in 2024
6 female births in 2024
Peak: 2004 (41 births)
Isaac: Popularity Over Time
SSA records for Isaac span from the 1880s to the 2020s, covering 15 decades of naming data. The most popular decade for this name was the 2010s, when 94,650 babies were registered. While Isaac is less common than at its peak in the 2010s, it remains a well-established name with steady registrations.
Isaac by Decade
How has Isaac 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.
| Decade | Total | Male | Female | |
|---|---|---|---|---|
| 1880s | 2,311 | 2,311 | 0 | |
| 1890s | 1,735 | 1,735 | 0 | |
| 1900s | 1,638 | 1,638 | 0 | |
| 1910s | 4,959 | 4,952 | 7 | |
| 1920s | 6,569 | 6,552 | 17 | |
| 1930s | 4,734 | 4,713 | 21 | |
| 1940s | 5,090 | 5,065 | 25 | |
| 1950s | 5,511 | 5,479 | 32 | |
| 1960s | 4,632 | 4,606 | 26 | |
| 1970s | 10,569 | 10,481 | 88 | |
| 1980s | 18,519 | 18,375 | 144 | |
| 1990s | 40,384 | 40,268 | 116 | |
| 2000s | 90,929 | 90,755 | 174 | |
| 2010s | 94,650 | 94,547 | 103 | |
| 2020s | 34,001 | 33,980 | 21 | |
Isaac by State
Birth registrations for Isaac span all 51 states and territories in the SSA database. The highest counts are in California, Texas, New York. The lowest are in Delaware, Wyoming, Vermont. On average, about 6,224 Isaacs were registered per state.
Isaac + Last Name Combinations
How many people share a full name with Isaac as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Isaac
Other first names starting with I with a similar number of bearers.
Isaac: Questions and Answers
How many people in the U.S. are named Isaac?
We estimate approximately 296,602 people named Isaac 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 1,156 Americans share this first name.
Is Isaac a common name?
Isaac is classified as "Common" and is more popular than 99.8% of all first names in the SSA database. A total of 326,231 births have been registered with this name since 1880.
When was Isaac most popular?
Isaac reached peak popularity in 2007, when 10,287 babies were given this name. The average age of a living person named Isaac is approximately 22 years old, reflecting when the name was most commonly given.
Is Isaac a male name?
Isaac is predominantly male. 99.8% of people with this name are male. See the gender breakdown above for full details.
How many Isaac Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Isaac Smith, Isaac Johnson, Isaac 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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