An 11-year-old girl from a country Victorian town gave birth to a child this year, allegedly to a 30-year-old man.

The man, a family friend of the girl's grandparents, is in custody facing 18 criminal charges.

He has been charged with rape, sexual penetration of a child under 16 and assault with intent and was remanded in custody pending trial.

The girl gave birth at an outer-suburban hospital.

The alleged father was arrested on September 9 after police and the Department of Human Services (DHS) were alerted to the case, a police spokeswoman said.

It is believed the DHS had not had any issues involving the girl or her family until the department was alerted to her pregnancy.

AAP