Boys' name · peaked in 2013
Isaac name popularity since 1925
318,173 babies born in the US from 1925 to 2025 were named Isaac. Half of them were born in 2007 or earlier, so the typical Isaac is about 19 years old in 2026. Isaac peaked in 2013 as the #28 name for boys, and it ranked #47 in 2025.
Key facts
- US babies since 1925
- 318,173
- Named Isaac, 1925–2025
- In 2025
- #47
- for boys in 2025 (5,953 babies)
- Girls / boys
- 99.8% boys
- 777 girls · 317,396 boys
- Most popular in
- Nevada
- 2.12× its national share
Peak year is the year Isaac 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.
Isaac births per year, 1925–2025
The biggest year by count was 2007. Measured as a share of all babies, Isaac peaked in 2013.
- Fastest rise: Between 1968 and 1973, Isaac became 2.3× more common, from 1 in 4,070 baby boys to 1 in 1,740.
Shaded on the chart. This compares Isaac's share of all US boys five years apart, counting only years with at least 100 babies named Isaac.
Decade by decade
Babies named Isaac 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 | 17 | 3,076 | – |
| 1930s | 21 | 4,715 | #241 |
| 1940s | 25 | 5,064 | #281 |
| 1950s | 32 | 5,479 | #315 |
| 1960s | 26 | 4,605 | #375 |
| 1970s | 88 | 10,480 | #213 |
| 1980s | 144 | 18,374 | #165 |
| 1990s | 116 | 40,271 | #98 |
| 2000s | 174 | 90,761 | #49 |
| 2010s | 103 | 94,574 | #31 |
| 2020–25 | 31 | 39,997 | #47 |
Ranks count every name given to at least 5 boys that year, so they can go past 1,000.
Generation fingerprint
43.2% of babies named Isaac from 1925 to 2025 were born in the Gen Z years (1997–2012). The full split by generation:
Where Isaac is most popular
The index compares Isaac'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 Isaac.
| State | Index | Babies |
|---|---|---|
| Nevada | 2.12× | 2,412 |
| New Mexico | 2.09× | 3,682 |
| Utah | 2.03× | 5,527 |
| Arizona | 1.91× | 7,913 |
| Alaska | 1.89× | 895 |
Other spellings
Spellings that sound like Isaac 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 |
|---|---|---|
| Isaac (this page) | 317,396 | 2013 |
| Issac | 23,549 | 2008 |
| Isaak | 4,271 | 2002 |
| Isac | 2,951 | 2006 |
| Izaac | 2,845 | 2013 |
| Isacc | 1,955 | 2003 |
Names with a similar story
Of the other 499 names on this site, these six had the share of babies closest in shape to Isaac's from 1925 to 2025, however common each one got. Each line is scaled to its own high; the dashed line is Isaac.
Names from the same era
Other common names that peaked within two years of Isaac (2013).
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