History of Oceania

What kind of stamps do you use US to mail a letter Canada?

For a standard-sized letter weighing up to 1 ounce (28 grams), you'd need a Permanent (First Class) stamp. The cost of a Permanent stamp is currently USD$1.40.

If the letter weighs over 1 ounce, you'd need to add an additional ounce stamp for each ounce or fraction of an ounce above 1 ounce. For example, if your letter weighs 2.5 ounces, you'd need two Permanent stamps, totalling $2.80.

You can purchase Permanent stamps at your local post office or online at USPS.com.