If you are talking about North Pole Alaska then yes it is valid. As a matter of fact most letters to Santa Clause go to North Pole Alaska.
There is no postal delivery to the North Pole.
north north
Yes if you're using the mail. If you are emailing, its free =P
two years
North pole. He wants to discover new lands.
Nowhere. You're not addressing it to any postal address in the North Pole, so it cannot be delivered.
It takes about 12,450.5 miles from the north pole to the south pole or south pole to north pole.
north celestial pole
in north pole
north pole north pole north pole
The North Pole
North and south pole