Alexius
- US rank
- Unranked
- Syllables
- 3
- Peak
- #3,215 in 1978
0 babies were named Alexius in the US in 2025.
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US births per million boys, 1928–2025
Similar names
Popularity: U.S. Social Security Administration (babies with 5+ births per year).
Did you know?
A few things about Alexius you might not know, from US birth records. Handy for convincing a partner, or a grandparent.
- HistoryAlexius first shows up in US birth records in 1928, the first year at least 5 babies got it. It has been in use for 97 years since.
- Best yearIts best year was 1978, when it reached #3,215.
About the name Alexius
Alexius is a boy name of Greek origin. It has 7 letters and 3 syllables, starting with A and ending in “-ius”. US birth records list Alexius for boys from 1928 to 2018, in 19 of those 91 years. Its best year was 1978, when it ranked #3,215 among boy names. It hasn't been given to 5 or more US babies in a year since 2018, so today it's a genuinely rare choice.
Origin:Greek names
| Decade | Babies per million | About 1 in |
|---|---|---|
| 1920s | 2.7 | 370,370 boys |
| 1970s | 1.6 | 609,756 boys |
| 1980s | 2.3 | 431,034 boys |
| 1990s | 0.9 | 1,136,364 boys |
| 2000s | 1.0 | 961,538 boys |
| 2010s | 1.3 | 769,231 boys |
More Greek boy names
- Boy name: Theodore · gift of God
- Boy name: Mateo · gift of God
- Boy name: Lucas · man from Lucania
- Unisex name: Elias · my God is Yahweh
- Boy name: Sebastian · venerable
- Boy name: Leo · lion
- Boy name: Thomas · twin
- Unisex name: Miles · possibly gracious
Questions about the name Alexius
What is the origin of the name Alexius?
Alexius has Greek roots in our records. Other Greek names include Theodore, Mateo, Lucas.
Is Alexius a boy or girl name?
Alexius is a boy name.
How popular is the name Alexius?
Alexius is rare: fewer than 5 US boys got it in 2025, and it was last given to 5 or more in 2018. It peaked at #3,215 in 1978.