Surname Sexius (Sexius 
) , across the world, is a very rare family name. The family name Sexius is characteristic of Saint Lucia, where it is quite a common surname, New Zealand, where it is a very rare surname, and Canada. Not in comparison with a country's population, this name is the most popular in Saint Lucia, the United States, and Canada.
| VARIANT | COUNTRY |
|---|---|
| Sexius | Canada, New Zealand, United States, Saint Lucia, United Kingdom |