How many state have two words in it?

There are 12 states in the United States that have two words in their names:

1. New Hampshire

2. New Jersey

3. New Mexico

4. New York

5. North Carolina

6. North Dakota

7. Rhode Island

8. South Carolina

9. South Dakota

10. West Virginia

11. United States (Technically, this is the name of the country, not a state, but it's a two-word name)

12. District of Columbia (Technically, this is a federal district, not a state, but it's a two-word name)