Sia
Girl name · #1107 in 2025 · Uniqueness 56/100
Sia is currently the #1107 girl name in the United States — 215 babies received it in 2025. A decade ago it stood at #1636, so the name has been rising over the past ten years. Roughly one in every 8,372 girls born in 2025 was named Sia.
Babies named Sia per year, 1880–2025. Source: SSA.
The 57-year story
Sia first appears in the Social Security records in 1968, when 9 girls received the name. Its all-time peak is essentially right now: 2025, with 215 babies and a rank of #1107. Names at their peak can keep climbing — or be one trend cycle from the long slide that eventually hits most popular names. Following the curve matters more than today's snapshot: a name's position on its rise-peak-decline arc is the best predictor of how common it will feel in a kindergarten class five years from now.
Unlock the 5-year forecast and compare Sia against up to 5 other names.
Uniqueness: will there be another Sia in class?
Sia scores 56 out of 100 on our uniqueness scale, which blends current rarity with five-year momentum — putting it in the "distinctive" band. That middle band is the sweet spot many parents hunt for: recognizable without being everywhere.
Where Sia is most common
Geography matters for names, and Sia is no exception. In 2025 the states with the most Sias were CA (42), TX (24), FL (13), NJ (12), WA (12). Raw counts naturally favor populous states, but the spread still hints at where the name is part of the local naming culture.
Names like Sia
Statistically, parents drawn to Sia tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Sama, Safa, Zia, Siya, and Gaia.
Rank history (last 25 years)
| Year | Babies named Sia | Rank |
|---|---|---|
| 2025 | 215 | #1107 |
| 2024 | 183 | #1270 |
| 2023 | 169 | #1339 |
| 2022 | 212 | #1145 |
| 2021 | 166 | #1337 |
| 2020 | 174 | #1282 |
| 2019 | 148 | #1483 |
| 2018 | 169 | #1335 |
| 2017 | 136 | #1600 |
| 2016 | 127 | #1684 |
| 2015 | 131 | #1636 |
| 2014 | 66 | #2648 |
| 2013 | 69 | #2568 |
| 2012 | 58 | #2935 |
| 2011 | 57 | #2989 |
| 2010 | 65 | #2726 |
| 2009 | 50 | #3298 |
| 2008 | 54 | #3120 |
| 2007 | 43 | #3721 |
| 2006 | 52 | #3176 |
| 2005 | 58 | #2827 |
| 2004 | 49 | #3127 |
| 2003 | 23 | #5235 |
| 2002 | 17 | #6392 |
| 2001 | 9 | #10102 |
Frequently asked questions
Is Sia a popular girl name?
Sia ranked #1107 among girls in 2025 with 215 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #1636.
When was the name Sia most popular?
Sia peaked in 2025, when 215 American girls received the name (ranked #1107 that year). That peak is current — the name is at or near its all-time high right now.
How rare is the name Sia?
In 2025, roughly 1 in 8,372 newborn American girls was named Sia. It scores 56/100 on our uniqueness scale (rarity blended with momentum), which we classify as "distinctive".
Data source: U.S. Social Security Administration name statistics, 1880–2025, national and state files. Counts reflect Social Security card applications; names with fewer than 5 occurrences in a state-year are suppressed by the SSA.