Holding steady.
Popularity of Mercia since 1918
Babies named Mercia per year in U.S. Social Security records.
Data table (by decade)
| Decade | Girls |
|---|---|
| 1910s | 15 |
| 1920s | 20 |
| 1930s | 18 |
| 1940s | 18 |
| 1950s | 17 |
| 1960s | 5 |
| 1970s | 5 |
| 1980s | 0 |
| 1990s | 0 |
| 2000s | 11 |
| 2010s | 5 |
| 2020s | 0 |
Meaning & origin
Mercia is a rare English name with an uncertain etymology, possibly linked to the Anglo-Saxon kingdom of Mercia or derived from a Latin root. Its usage in the United States has been minimal, first appearing in records in 1918 and peaking in 1919 with a small number of births. From 1918 to 2025, the name's trajectory has been stable but extremely low, consistently ranking outside the top 1,000 and never attaining widespread popularity. Top states data show no strong regional concentration, making Mercia a geographically neutral choice. Its obscurity and lack of modern revival suggest it is unlikely to return to fashion, but it retains a historical character for those seeking an antique name with a distinct sound.
Mercia is a name of uncertain origin. It may derive from the Old English kingdom of Mercia, whose name likely comes from the Old English 'mearc' meaning 'boundary' (referring to the borderland between Anglo-Saxon kingdoms). Alternatively, it could be a feminine form of the Latin name Mercius (from Mars, the Roman god of war), though evidence is slim. The name saw limited use in the early 20th century, appearing in U.S. records from 1918 with a small spike in 1919, but never became common.
Nicknames & variants
Nicknames: Mercy, Cia
Sibling names for Mercia
Names that share Mercia's style, for a brother or sister.

