How much postage to send 1 oz letter Guam?

This applies to letters going from any part of the United States to Guam.

Here is a table of postage rates for letters up to 13 ounces:

Letter Weight | Postage Rate (USPS First-Class Mail)

---- | ----

1 ounce or less | $1.15

2 ounces | $1.20

3 ounces | $1.30

4 ounces | $1.40

5 ounces | $1.50

6 ounces | $1.60

7 ounces | $1.70

8 ounces | $1.80

9 ounces | $1.90

10 ounces | $2.00

11 ounces | $2.10

12 ounces | $2.20

13 ounces | $2.30

These rates are for letters with a rectangular shape and a thickness of no more than 1/4 inch. Letters that are non-rectangular or thicker than 1/4 inch may require additional postage.

For more information on postage rates and services, please visit the United States Postal Service (USPS) website.