This is more dependent on the car rental company than the state. As long as you have a valid, unrestricted drivers license, you can drive any car. However, most car rental companies do not let anyone under the age of 25 rent a car.
If you are between 18-25, you might be in luck with a smaller car rental company, but don't be surprised if you get charged some type of extra fee.
probably
To rent a car as a 21-year-old, you typically need to be at least 21 years old.
In San Francisco, you must be at least 21 years old to rent a car.
you must be 25 to rent a car out of any major airport in MA.
You must be 25 to rent or drive a rental car.
In Arizona, you must be at least 21 years old to rent a car.
Usually to rent a car you have to be 25 years old. Usually you are required to have a credit card as well.
old enough
25 years old
bazilion
21
sixty