Boys' name · peaked in 2006
Isaiah name popularity since 1925
252,396 babies born in the US from 1925 to 2025 were named Isaiah. Half of them were born in 2008 or earlier, so the typical Isaiah is about 18 years old in 2026. Isaiah peaked in 2006 as the #39 name for boys, and it ranked #57 in 2025.
Key facts
- US babies since 1925
- 252,396
- Named Isaiah, 1925–2025
- In 2025
- #57
- for boys in 2025 (5,267 babies)
- Girls / boys
- 99.7% boys
- 690 girls · 251,706 boys
- Most popular in
- New Mexico
- 2.58× its national share
Peak year is the year Isaiah 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.
Isaiah births per year, 1925–2025
2006 was the biggest year for Isaiah both by count and as a share of all babies.
- Fastest rise: Between 1993 and 1998, Isaiah became 4.4× more common, from 1 in 1,310 baby boys to 1 in 295.
Shaded on the chart. This compares Isaiah's share of all US boys five years apart, counting only years with at least 100 babies named Isaiah.
Decade by decade
Babies named Isaiah 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 | 624 | – |
| 1930s | 0 | 1,039 | #586 |
| 1940s | 0 | 1,194 | #556 |
| 1950s | 0 | 1,180 | #669 |
| 1960s | 0 | 727 | #885 |
| 1970s | 5 | 1,578 | #715 |
| 1980s | 56 | 6,709 | #320 |
| 1990s | 170 | 36,586 | #109 |
| 2000s | 267 | 92,786 | #45 |
| 2010s | 138 | 76,320 | #49 |
| 2020–25 | 54 | 32,963 | #57 |
Ranks count every name given to at least 5 boys that year, so they can go past 1,000.
Generation fingerprint
54.9% of babies named Isaiah from 1925 to 2025 were born in the Gen Z years (1997–2012). The full split by generation:
Where Isaiah is most popular
The index compares Isaiah'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 Isaiah.
| State | Index | Babies |
|---|---|---|
| New Mexico | 2.58× | 3,594 |
| Nevada | 2.41× | 2,164 |
| Hawaii | 2.26× | 1,777 |
| Alaska | 1.99× | 746 |
| Arizona | 1.97× | 6,436 |
Other spellings
Spellings that sound like Isaiah 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 |
|---|---|---|
| Isaiah (this page) | 251,706 | 2006 |
| Isiah | 22,255 | 2001 |
| Izaiah | 14,899 | 2012 |
Names with a similar story
Of the other 499 names on this site, these six had the share of babies closest in shape to Isaiah's from 1925 to 2025, however common each one got. Each line is scaled to its own high; the dashed line is Isaiah.
Names from the same era
Other common names that peaked within two years of Isaiah (2006).
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