Postage Scale Rates

When you need to send out a package or a simple letter, the U.S. Postal Service will generally have the best rates. However, the actual rates can vary depending on the weight of the object, its destination and how fast you want the package to arrive at its desired location. These specific rates are current as of August 2009.

Domestic Mail

Postcard sent within the United States: 28 cents
United States standard first-class letter (1 oz. or less): 44 cents
First-class letter (between 1 and 2 oz.): 61 cents
First-class letter (between 2 and 3 oz.): 78 cents

First-Class flat rate

Flat rate packages are packages specifically created by the post office. They can hold anything up to their given weight and the price will still be the same, no matter the weight.
Up to 1 oz. flat rate: 88 cents
Up to 2 oz. flat rate: $1.05
Up to 3 oz .flat rate: $1.22
Up to 4 oz. flat rate: $1.39
Up to 5 oz. flat rate: $1.56
Up to 6 oz. flat rate: $1.73
Up to 7 oz. flat rate: $1.90
Up to 8 oz. flat rate: $2.07
Up to 9 oz. flat rate: $2.24
Up to 10 oz. flat rate: $2.41
Up to 11 oz. flat rate: $2.58
Up to 12 oz. flat rate: $2.75
Up to 13 oz. flat rate: $2.92

Extra Fees

There are several different additions you can use when using the US. Postal Service.
Certified mail (the recipient must sign for it) will cost $2.80.
A money order will cost between $1.10 and $1.50 excluding military money orders, which cost 30 cents.

References

• Postage scale rates