Girl · Name family
Alethea
20,806births recorded
4Countries
5Variants
1918Peak · Ontario
#2787England & Wales 2025
Alethea is a girl name family recorded 20,806 times in 4 countries since 1881. It ranks highest today in England & Wales (#2787 in 2025). Its all-time peak was in Ontario in 1918, at 24.8 births per 100,000. Elsewhere it is mostly given as Aletha (United States, Ontario).
Popularity by country
Births per 100,000 newborns, all forms of the name combined.
Which form wins where
Births per 100,000 newborns for each form, in the selected country.
All forms of Alethea
| Variants | Language | Total births | Country | Latest rank | Peak year | 10-year trend |
|---|---|---|---|---|---|---|
| Aletha | English | 6,948 | 🇺🇸 United States | – | 1906 | – |
| Aletha | English | 18 | 🇨🇦 Ontario | – | 1918 | – |
| Aleta | English | 6,446 | 🇺🇸 United States | #14942 | 1947 | ▼ 61 % |
| Aleta | English | 8 | 🇨🇦 British Columbia | – | 1980 | – |
| Aleta | English | 8 | 🇨🇦 Ontario | – | 1918 | – |
| Alethea | English | 4,968 | 🇺🇸 United States | #3028 | 1973 | ▲ 51 % |
| Alethea | English | 327 | 🏴 England & Wales | #2787 | 2019 | ▼ 26 % |
| Alethea | English | 11 | 🇨🇦 British Columbia | – | 1973 | – |
| Alethea | English | 7 | 🇨🇦 Ontario | – | 2020 | – |
| Aletta | English | 1,111 | 🇺🇸 United States | #5554 | 1935 | ▲ 106 % |
| Aletta | English | 5 | 🏴 England & Wales | – | 2013 | – |
| Aletheia | English | 890 | 🇺🇸 United States | #2895 | 2020 | ▲ 33 % |
| Aletheia | English | 59 | 🏴 England & Wales | #2787 | 2025 | ▲ 121 % |
How we grouped these names
- Aletta ↔ Alethea — Wikidata “said to be the same as”
- Aletta ↔ Aletheia — Wikidata “said to be the same as”
- Aletha ↔ Aleta — spelling variant
- Aletha ↔ Aletta — spelling variant
Questions about Alethea
How popular is the name Alethea?
In 2025 it ranked #2787 in England & Wales. Official registers record 20,806 births across 4 countries.
What is Alethea in other languages?
Aletha (English); Aleta (English); Aletta (English); Aletheia (English).
When was Alethea most popular?
It peaked in Ontario in 1918, at 24.8 births per 100,000.
Is Alethea a boy or a girl name?
In official birth registers, Alethea is a girl name.