Sydni Girl
How popular is Sydni?
#10,913 girl name in 2025
8 baby girls were named Sydni in the US in 2025, making it the 10913th most popular girl name.
5,294living people named Sydni (est.)
25median age of people named Sydni
5,361babies named Sydni since 1880
1 in 414,418US babies born in 2025
Sydni popularity over time
| Rank in 2025 | #10,913 for girls (▼ 3666 from 2024) |
|---|---|
| Babies in 2025 | 8 girls |
| 10-year trend | Falling fast (-81% babies vs 2015) |
| Earlier ranks | #3,649 in 2015, #4,646 in 2020 |
| Peak year | 2000 (468 girls) |
| Highest rank | #557 in 2000 |
| First recorded | 1947 |
| Boys vs girls (last 10 years) | 0% boys, 100% girls |
| Chance a classmate shares it | 0.0% in a class of 25 kids born in 2025 |
Sydni counting every spelling
Social Security counts each spelling as its own name. Adding together the spellings that sound alike, the Sydney family of names ranked #324 for girls in 2025 (#270 the year before), with 1,009 babies in all.
Spellings are grouped by how they sound, using our own rules, so a few groupings may not match how your family says the name.
Sydni by decade
| Decade | Baby girls | Best rank |
|---|---|---|
| 1940s | 5 | #5,293 |
| 1960s | 9 | #4,492 |
| 1970s | 18 | #6,617 |
| 1980s | 217 | #1,993 |
| 1990s | 1,946 | #611 |
| 2000s | 2,503 | #557 |
| 2010s | 575 | #1,928 |
| 2020s | 88 | #4,646 |
Girl names about as popular as Sydni
Questions
- Is Sydni a boy or girl name?
- Sydni is mostly a girl name. Over the last 10 years, 100% of babies named Sydni were girls.
- How popular is the name Sydni?
- 8 baby girls were named Sydni in the US in 2025, making it the 10913th most popular girl name.
- When was Sydni most popular?
- Sydni peaked in 2000, when 468 girls were given the name. Its highest rank was #557 in 2000.
- How many people are named Sydni?
- 5,361 babies have been named Sydni in the US since 1880. We estimate about 5,294 of them are alive in 2026, with a median age of 25.
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.