How much for domestic mail stamp

The cost of a domestic mail stamp in the United States varies depending on the weight and size of the mailpiece, as well as the type of service used. Here are the current rates for domestic mail stamps:

First-Class Mail

• Letter (1 oz): $0.55
• Large Envelope (1 oz): $0.55
• Flat (1 oz): $1.00

Priority Mail

• Small Flat Rate Box: $7.50
• Medium Flat Rate Box: $13.75
• 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: $26.35
• Regional Rate Box B: $30.35

First-Class Package Service

• Small Flat Rate Box: $7.50
• Medium Flat Rate Box: $13.75
• Large Flat Rate Box: $19.95

Other Services

• Certified Mail: $3.45 (plus $0.55 for each additional ounce)
• Return Receipt: $1.45 (plus $0.55 for each additional ounce)
• Signature Confirmation: $3.45 (plus $0.55 for each additional ounce)

Please note that these rates are subject to change, so it's always a good idea to check the official USPS website or consult with a postal worker for the most up-to-date information.