One Forever stamp, as long as its no more than one ounce.
676767676
None, email does not require a stamp.
You can send a letter from Texas to Oregon with one stamp.
One.
You would only need one stamp to mail your letter
Ohio is a state, one stamp.
Three. Ohio, Oklahoma, & Oregon.
3 Ohio, Oregon, Oklahoma
Just one of the right denomination. 44¢
Three: Ohio Oregon Oklahoma (I assume you are talking about states in the US.)
just 1 stamp if its within the correct size and weight limit
Ask at a post office in Oregon.
There are four: New Mexico Colorado Idaho Ohio