Gillian Girl
How popular is Gillian?
#3,295 girl name in 2025
47 baby girls were named Gillian in the US in 2025, making it the 3295th most popular girl name.
15,690living people named Gillian (est.)
27median age of people named Gillian
16,127babies named Gillian since 1880
1 in 70,539US babies born in 2025
Gillian popularity over time
Boys Girls
| Rank in 2025 | #3,295 for girls (▼ 214 from 2024) |
|---|---|
| Babies in 2025 | 47 girls |
| 10-year trend | Falling fast (-61% babies vs 2015) |
| Earlier ranks | #1,743 in 2015, #3,061 in 2020 |
| Peak year | 1999 (1,022 girls) |
| Highest rank | #303 in 1999 |
| First recorded | 1922 |
| Boys vs girls (last 10 years) | 1% boys, 99% girls |
| Chance a classmate shares it | 0.0% in a class of 25 kids born in 2025 |
Where Gillian is most popular
Babies named Gillian per 1,000 girls born in each state, 2021 to 2025. Darker means more common.
AKMEVTNHWAIDMTNDMNILWIMINYRIMAORNVWYSDIAINOHPANJCTCAUTCONEMOKYWVVAMDDEAZNMKSARTNNCSCDCOKLAMSALGAHITXFL
- Tennessee: 0.0 per 1,000 (5 girls)
- California: 0.0 per 1,000 (23 girls)
- Ohio: 0.0 per 1,000 (6 girls)
- New York: 0.0 per 1,000 (5 girls)
- Texas: 0.0 per 1,000 (6 girls)
Gillian by decade
| Decade | Baby girls | Best rank |
|---|---|---|
| 1920s | 5 | #5,007 |
| 1930s | 12 | #3,798 |
| 1940s | 128 | #2,012 |
| 1950s | 234 | #1,880 |
| 1960s | 758 | #943 |
| 1970s | 1,329 | #846 |
| 1980s | 2,384 | #671 |
| 1990s | 4,152 | #303 |
| 2000s | 5,489 | #325 |
| 2010s | 1,263 | #1,153 |
| 2020s | 305 | #3,061 |
Girl names about as popular as Gillian
Questions
- Is Gillian a boy or girl name?
- Gillian is mostly a girl name. Over the last 10 years, 99% of babies named Gillian were girls.
- How popular is the name Gillian?
- 47 baby girls were named Gillian in the US in 2025, making it the 3295th most popular girl name.
- When was Gillian most popular?
- Gillian peaked in 1999, when 1,022 girls were given the name. Its highest rank was #303 in 1999.
- How many people are named Gillian?
- 16,127 babies have been named Gillian in the US since 1880. We estimate about 15,690 of them are alive in 2026, with a median age of 27.
- Where is Gillian most popular?
- From 2021 to 2025, Gillian was most common in Tennessee, at 0.0 of every 1,000 girls 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.