Only one
How many stamps are needed to send a letter from Texas to Alaska?
A single 45 cent First Class stamp did the job after 22 January 2012.
one
One first class postage.
You can send a letter from Texas to Oregon with one stamp.
1. it's the same for all of the US
probally just 1 or 2 42 cent stamps
it takes about two to five.
One
only one
For a normal first class letter, you use a single stamp.
Stamps are not based on distance, but rather on weight. Therefor, 1 stamp should be plenty of postage for a standard letter.