Iain Boy
How popular is Iain?
#7,190 boy name in 2025
11 baby boys were named Iain in the US in 2025, making it the 7190th most popular boy name.
Iain popularity over time
| Rank in 2025 | #7,190 for boys (▼ 2993 from 2024) |
|---|---|
| Babies in 2025 | 11 boys |
| 10-year trend | Falling fast (-78% babies vs 2015) |
| Earlier ranks | #2,485 in 2015, #2,727 in 2020 |
| Peak year | 2003 (126 boys) |
| Highest rank | #1,180 in 2003 |
| First recorded | 1953 |
| Boys vs girls (last 10 years) | 100% boys, 0% girls |
| Chance a classmate shares it | 0.0% in a class of 25 kids born in 2025 |
Iain counting every spelling
Social Security counts each spelling as its own name. Adding together the spellings that sound alike, the Ian family of names ranked #91 for boys in 2025 (#81 the year before), with 3,963 babies in all.
| Spelling | Boys in 2025 | Share |
|---|---|---|
| Ian | 3,924 | 99% |
| Iain | 11 | 0% |
| Iann | 19 | 0% |
| Iyan | 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 Iain is most popular
Babies named Iain per 1,000 boys born in each state, 2021 to 2025. Darker means more common.
- Texas: 0.0 per 1,000 (6 boys)
- California: 0.0 per 1,000 (6 boys)
Iain by decade
| Decade | Baby boys | Best rank |
|---|---|---|
| 1950s | 16 | #3,424 |
| 1960s | 112 | #1,766 |
| 1970s | 157 | #2,057 |
| 1980s | 320 | #1,465 |
| 1990s | 618 | #1,276 |
| 2000s | 1,011 | #1,180 |
| 2010s | 522 | #1,987 |
| 2020s | 155 | #2,727 |
Boy names about as popular as Iain
Questions
- Is Iain a boy or girl name?
- Iain is mostly a boy name. Over the last 10 years, 100% of babies named Iain were boys.
- How popular is the name Iain?
- 11 baby boys were named Iain in the US in 2025, making it the 7190th most popular boy name.
- When was Iain most popular?
- Iain peaked in 2003, when 126 boys were given the name. Its highest rank was #1,180 in 2003.
- How many people are named Iain?
- 2,911 babies have been named Iain in the US since 1880. We estimate about 2,820 of them are alive in 2026, with a median age of 24.
- Where is Iain most popular?
- From 2021 to 2025, Iain was most common in Texas, at 0.0 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.