Sia is a girl name with a rare feel, drawn from real birth records. Below you'll find how many babies have been named Sia across the United States, UK, Ireland and New Zealand, how popular Sia has been over the decades, and the year it peaked.
| Country | Births on record |
|---|---|
| United States since 1880 | 2,795 births |
| England & Wales since 1996 | 966 births |
| Scotland since 1974 | 29 births |
| Northern Ireland since 1997 | 3 births |
| Ireland since 1964 | 33 births |
Counts come from official national birth-registration statistics: U.S. Social Security Administration, England & Wales (Office for National Statistics), Scotland (National Records of Scotland), Northern Ireland (NISRA), Ireland (Central Statistics Office) and New Zealand (Dept. of Internal Affairs). Coverage spans differ, so totals aren't directly comparable across countries.
Babies named Sia per year, United States (1968 to 2025). United States peaked in 2025 (215/yr) · England & Wales peaked in 2017 (91/yr) · Ireland peaked in 2023 (7/yr) · Scotland peaked in 2017 (7/yr) · Northern Ireland peaked in 2023 (3/yr).
Sia is an uncommon baby name in the United States. It was most common in 2025, when it ranked #2,108 nationally (given to 284 babies that year).
Sue · Siya · Zia · Ziya · Zya · Zaia · Saya · Sai
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