Dillan Boy
How popular is Dillan?
#3,847 boy name in 2025
28 baby boys were named Dillan in the US in 2025, making it the 3847th most popular boy name. Another 9 girls got the name (#10,104 for girls).
Dillan popularity over time
Boys Girls
| Rank in 2025 | #3,847 for boys (▼ 974 from 2024) |
|---|---|
| Babies in 2025 | 28 boys, 9 girls |
| 10-year trend | Falling fast (-76% babies vs 2015) |
| Earlier ranks | #1,438 in 2015, #2,436 in 2020 |
| Peak year | 1992 (341 boys) |
| Highest rank | #553 in 1992 |
| First recorded | 1975 |
| Boys vs girls (last 10 years) | 83% boys, 17% girls |
| Chance a classmate shares it | 0.0% in a class of 25 kids born in 2025 |
Dillan counting every spelling
Social Security counts each spelling as its own name. Adding together the spellings that sound alike, the Dylan family of names ranked #40 for boys in 2025 (#25 the year before), with 6,834 babies in all.
| Spelling | Boys in 2025 | Share |
|---|---|---|
| Dylan | 6,208 | 91% |
| Dillon | 253 | 4% |
| Dilan | 309 | 5% |
| Dillan | 28 | 0% |
| Dyllan | 11 | 0% |
| Dylon | 11 | 0% |
| Dylen | 6 | 0% |
| Dylin | 8 | 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 Dillan is most popular
Babies named Dillan per 1,000 boys born in each state, 2021 to 2025. Darker means more common.
- Florida: 0.0 per 1,000 (11 boys)
- Texas: 0.0 per 1,000 (12 boys)
- California: 0.0 per 1,000 (8 boys)
Dillan by decade
| Decade | Baby boys | Best rank |
|---|---|---|
| 1970s | 10 | #5,462 |
| 1980s | 153 | #1,610 |
| 1990s | 2,643 | #553 |
| 2000s | 2,703 | #666 |
| 2010s | 1,205 | #984 |
| 2020s | 280 | #2,354 |
Boy names about as popular as Dillan
Questions
- Is Dillan a boy or girl name?
- Dillan is mostly a boy name. Over the last 10 years, 83% of babies named Dillan were boys.
- How popular is the name Dillan?
- 28 baby boys were named Dillan in the US in 2025, making it the 3847th most popular boy name. Another 9 girls got the name (#10,104 for girls).
- When was Dillan most popular?
- Dillan peaked in 1992, when 341 boys were given the name. Its highest rank was #553 in 1992.
- How many people are named Dillan?
- 7,387 babies have been named Dillan in the US since 1880. We estimate about 7,248 of them are alive in 2026, with a median age of 23.
- Where is Dillan most popular?
- From 2021 to 2025, Dillan was most common in Florida, 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.