Surname Hilkia (Hilkia 
) , in the world, is a rare last name. The cognomen Hilkia is habitual in Indonesia, where it is a very rare surname, Israel, and India, where it is an extremely rare surname. Likewise, Hilkia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Hilkia | Indonesia, South Africa, Tanzania, India, Brazil |