How Many State Names Begin With The Letter P?

Of the 50 federated states of the United States of America, only one of them begins with the letter 'P'. It is:

• Pennsylvania (Keystone State)

If you are asking about United States, then its only "Pennsylvania" the 33rd largest state in the United States that begins with letter P. Pennsylvania's capital is Harrisburg. Pennsylvania's population is estimated to be 12,448,279 as of 2008 estimate.
But, If you are asking about Countries, then following are countries whose name begin with letter P:
Pakistan,
Palau,
Palestine,
Panama,
Papua New Guinea,
Paraguay,
Peru,
Philippines,
Poland,
And
Portugal.