Cognomen Jayco (Jayco 
) , in all the world, is a rare surname. The surname Jayco is habitual in Philippines, where it is a rare surname, Peru, where it is a very rare surname, and Australia. In absolute terms, it is commonest in Philippines, the United States, and Peru. Likewise, Jayco is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jayco | Guatemala, Philippines, United States, Peru, Dominican Republic |