How Many Stamps Do I Need For A 6 x 9 Envelope?
Dumb Little Man
MARCH 18, 2019
The amount of postage needed to mail a 6” x 9” envelope depends on the postal classification rate used for shipping. When mailing to an address within the US, the most popular service is First Class. Priority Mail Express Service offers a flat rate fee that includes several extra services at no additional costs. A 6” x 9” envelope will fit in a USPS Priority Mail 9-1/2” x 12-1/2” envelope and can be mailed for a domestic flat rate of $6.70.