It's not a matter of how many stamps. Stamps come in different values (denominations), just like coins. It's like asking how many coins a candy bar costs. The question is how much postage.
You can send an ordinary first-class letter to Canada from the U.S. for 69 cents.
75 cents is the cost of sending an ordinary letter to Canada from the US.
The number of stamps must equal the amount of postage. The postage depends on the weight and and form of transport.
It's all about weight and delivery times. Find out here: http://www.usps.com
If you are sending a normal-sized letter, you would need $0.49 total of stamps to mail it from Indiana to California. You could use a Forever stamp or a combination of other stamps that equals $0.49.
If you are sending a three paged letter it is around three US stamps!!!!
One First Class is adequate if it is a standard size envelope of one ounce or less.
12 stamps
40
you have to put i think 2 or 3 stamps on a letter to Santa
When mailing a letter or package you always use postage purchased in the country you are mailing from. So if you are mailing a letter from the USA to Canada, you would buy stamps at your local post office.
typicaly 2 stamps
It takes 42 postage stamps