There's no way to give an accurate answer as it will depend on whether the 19 year old is a male or female and what kind of vehicle they're driving.
When I was 19 and I'm a female the cost of my insurance was $200.00 per month. Yes it was that expensive but the insurance dropped to only $100.00 per month when I turned 25 years old and had a clean driving record.
Car insurance anywhere is expensive for new drivers and young drivers.
Best thing to do would be to go to an insurance website and get an online quote for the auto insurance or you could even call up an insurance company to get an estimate on your auto insurance rates as a 19 year old.