Boys' name · peaked in 2008
Issac name popularity since 1925
23,566 babies born in the US from 1925 to 2025 were named Issac. Half of them were born in 2004 or earlier, so the typical Issac is about 22 years old in 2026. Issac peaked in 2008 as the #376 name for boys, and it ranked #915 in 2025.
Key facts
- US babies since 1925
- 23,566
- Named Issac, 1925–2025
- In 2025
- #915
- for boys in 2025 (258 babies)
- Girls / boys
- 99.9% boys
- 17 girls · 23,549 boys
- Most popular in
- Arizona
- 2.31× its national share
Peak year is the year Issac made up the largest share of US boys, in records going back to 1880. Typical age is based on births from 1925 on, not on who is living today.
Issac births per year, 1925–2025
2008 was the biggest year for Issac both by count and as a share of all babies.
- Fastest rise: Between 1992 and 1997, Issac became 1.7× more common, from 1 in 7,860 baby boys to 1 in 4,530.
- Steepest fall: Between 2020 and 2025, its share of baby boys fell by 39%, from 1 in 4,020 to 1 in 6,620.
Shaded on the chart. Both compare Issac's share of all US boys five years apart, counting only years with at least 100 babies named Issac.
Decade by decade
Babies named Issac in each decade, and its rank among boys' names in the middle year of the decade (1935, 1945 … 2025).
| Decade | Girls | Boys | Rank |
|---|---|---|---|
| 1925–29 | 0 | 266 | – |
| 1930s | 0 | 501 | #899 |
| 1940s | 0 | 562 | #802 |
| 1950s | 0 | 731 | #834 |
| 1960s | 0 | 608 | #907 |
| 1970s | 6 | 1,333 | #736 |
| 1980s | 11 | 1,852 | #657 |
| 1990s | 0 | 3,495 | #572 |
| 2000s | 0 | 6,790 | #405 |
| 2010s | 0 | 5,305 | #562 |
| 2020–25 | 0 | 2,106 | #915 |
Ranks count every name given to at least 5 boys that year, so they can go past 1,000.
Generation fingerprint
42.7% of babies named Issac from 1925 to 2025 were born in the Gen Z years (1997–2012). The full split by generation:
Where Issac is most popular
The index compares Issac's share of babies in each state with its share nationwide, 1925–2025 (1.50× = 50% more common). States with at least 300 babies named Issac.
| State | Index | Babies |
|---|---|---|
| Arizona | 2.31× | 599 |
| California | 2.13× | 4,522 |
| Texas | 1.99× | 3,127 |
| Mississippi | 1.93× | 467 |
| Colorado | 1.36× | 335 |
Other spellings
Spellings that sound like Issac and were given to at least 1,000 boys from 1925 to 2025, with the year each one was most popular.
| Spelling | Boys | Peak year |
|---|---|---|
| Issac (this page) | 23,549 | 2008 |
| Isaac | 317,396 | 2013 |
| Isac | 2,951 | 2006 |
| Isacc | 1,955 | 2003 |
Names with a similar story
Of the other 1999 names on this site, these six had the share of babies closest in shape to Issac's from 1925 to 2025, however common each one got. Each line is scaled to its own high; the dashed line is Issac.
Names from the same era
Other common names that peaked within two years of Issac (2008).
Source: U.S. Social Security Administration national and state baby-name data, which covers names given to at least 5 babies of one sex in a year. About the data