Us mail postage per ounce

The current postage rates for the United States Postal Service (USPS) are as follows:

First-Class Mail

• Letters (1 oz or less): $0.55
• Letters (over 1 oz): $0.92 (additional ounce rate)
• Large Envelopes (1 oz or less): $0.92
• Large Envelopes (over 1 oz): $1.19 (additional ounce rate)

Priority Mail

• Small Flat Rate Box: $7.95
• Medium Flat Rate Box: $14.35
• Large Flat Rate Box: $19.95
• Regional Rate Box A: $12.35
• Regional Rate Box B: $14.35

Priority Mail Express

• Small Flat Rate Box: $25.50
• Medium Flat Rate Box: $34.50
• Large Flat Rate Box: $44.50
• Regional Rate Box A: $29.50
• Regional Rate Box B: $34.50

Additional Ounce Rates

• First-Class Mail: $0.92 per ounce (over 1 oz)
• Priority Mail: $0.20 per ounce (over 1 lb)

International Postage

• First-Class Mail International: $1.20 (1 oz or less)
• Priority Mail International: $24.95 (small flat rate box)
• Priority Mail International: $34.95 (medium flat rate box)
• Priority Mail International: $44.95 (large flat rate box)

Please note that these rates are subject to change, and you should always check the USPS website for the most up-to-date information.