Isaiah Boy
How popular is Isaiah?
#57 boy name in 2025
5,267 baby boys were named Isaiah in the US in 2025, making it the 57th most popular boy name. Another 6 girls got the name (#13,204 for girls).
Isaiah popularity over time
Boys Girls
| Rank in 2025 | #57 for boys (▼ 1 from 2024) |
|---|---|
| Babies in 2025 | 5,267 boys, 6 girls |
| 10-year trend | Falling (-31% babies vs 2015) |
| Earlier ranks | #49 in 2015, #51 in 2020 |
| Peak year | 2006 (10,459 boys) |
| Highest rank | #39 in 2006 |
| First recorded | 1880 |
| Boys vs girls (last 10 years) | 100% boys, 0% girls |
| Chance a classmate shares it | 4% in a class of 25 kids born in 2025 |
Isaiah counting every spelling
Social Security counts each spelling as its own name. Adding together the spellings that sound alike, the Isaiah family of names ranked #59 for boys in 2025 (#53 the year before), with 5,830 babies in all.
| Spelling | Boys in 2025 | Share |
|---|---|---|
| Isaiah | 5,267 | 90% |
| Izaiah | 439 | 8% |
| Izayah | 90 | 2% |
| Izaya | 10 | 0% |
| Isayah | 8 | 0% |
| Isaia | 7 | 0% |
| Issaiah | 9 | 0% |
Spellings are grouped by how they sound, using our own rules, so a few groupings may not match how your family says the name.
Where Isaiah is most popular
Babies named Isaiah per 1,000 boys born in each state, 2021 to 2025. Darker means more common.
- Hawaii: 8.0 per 1,000 (125 boys)
- New Mexico: 5.7 per 1,000 (187 boys)
- Nevada: 5.6 per 1,000 (317 boys)
- Alaska: 5.5 per 1,000 (66 boys)
- California: 4.7 per 1,000 (4,327 boys)
Isaiah by decade
| Decade | Baby boys | Best rank |
|---|---|---|
| 1880s | 304 | #267 |
| 1890s | 264 | #270 |
| 1900s | 263 | #393 |
| 1910s | 845 | #440 |
| 1920s | 1,262 | #506 |
| 1930s | 1,039 | #545 |
| 1940s | 1,194 | #554 |
| 1950s | 1,180 | #577 |
| 1960s | 727 | #778 |
| 1970s | 1,578 | #482 |
| 1980s | 6,709 | #228 |
| 1990s | 36,586 | #51 |
| 2000s | 92,786 | #39 |
| 2010s | 76,320 | #42 |
| 2020s | 32,963 | #51 |
Boy names about as popular as Isaiah
Questions
- Is Isaiah a boy or girl name?
- Isaiah is mostly a boy name. Over the last 10 years, 100% of babies named Isaiah were boys.
- How popular is the name Isaiah?
- 5,267 baby boys were named Isaiah in the US in 2025, making it the 57th most popular boy name. Another 6 girls got the name (#13,204 for girls).
- When was Isaiah most popular?
- Isaiah peaked in 2006, when 10,459 boys were given the name. Its highest rank was #39 in 2006.
- How many people are named Isaiah?
- 254,710 babies have been named Isaiah in the US since 1880. We estimate about 246,289 of them are alive in 2026, with a median age of 18.
- Where is Isaiah most popular?
- From 2021 to 2025, Isaiah was most common in Hawaii, at 8.0 of every 1,000 boys born there.
Source: Social Security Administration baby name data, 1880 to 2025 (names given to at least 5 babies of a sex in a year). Living-people and median-age figures are our estimates using US life tables. How we calculate.