First-Class Mail

First-Class Mail includes all personal correspondence, all bills and statements of accounts, all matter sealed or otherwise closed against inspection, and matter wholly or partly in writing or typewriting. Any mailable items may be sent as First-Class Mail. Each piece must weigh 13 oz or less. Pieces over 13 oz can be sent as Priority Mail.

Retail Letters and Cards

Weight not over (oz)	Rate
1	$0.46
2	0.66
3	0.86

Retail Flats

1st oz	$0.92
Each additional oz	0.20

Weight not over (oz)	Rate
1	$0.92
2	1.12
3	1.32
4	1.52
5	1.72
6	1.92
7	2.12
8	2.32
9	2.52
10	2.72
11	2.92
12	3.12
13	3.32
Over 13 oz, see Priority Mail.

*Nonstandard surcharge may apply to pieces weighing 1 oz or less based on size.

Card Rates

Single postal card sold by United States Postal Service	$0.33

Postcard Dimensions: Not larger than 4¹/4 by 6 in. by 0.016 in. thick. Not smaller than 3¹/2 by 5 in. by 0.007 in. thick.

U.S. Postal Rates and Fees

Express Mail

More on First-Class Mail from Infoplease:

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