First-Class Mail�
First-Class Mail� is used for personal and business correspondence. Any mailable item may be sent as First-Class Mail. It includes postcards, letters, large envelopes, and small packages. The maximum weight is 13 ounces. Pieces over 13 ounces can be sent as Priority Mail.
The minimum size for First-Class Mail is 5 inches long, 3-1/2 inches high, and 0.007 inch thick. Pieces weighing 1 ounce or less may be subject to the nonmachinable surcharge.
First-Class Mail Rates
First ounce $0.39
Each additional ounce $0.24
First-Class Mail Rates
Weight not over (ounces) Rate
1*
$0.39
2
0.63
3
0.87
4
1.11
5
1.35
6
1.59
7
1.83
8
2.07
9
2.31
10
2.55
11
2.79
12
3.03
13
3.27
