How much stamp for domestic mail

The cost of a stamp for domestic mail 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:

Letters (1 oz or less)

• First-Class Mail: $0.55
• Priority Mail: $7.50 (flat rate envelope)

Large Envelopes (1 oz or less)

• First-Class Mail: $0.92
• Priority Mail: $7.50 (flat rate envelope)

Packages (up to 13 oz)

• First-Class Package Service: $3.50 (up to 13 oz)
• Priority Mail: $7.50 (flat rate box)

Packages (over 13 oz)

• First-Class Package Service: $3.50 (up to 13 oz) + $0.15 per ounce (over 13 oz)
• Priority Mail: $7.50 (flat rate box) + $0.15 per ounce (over 13 oz)

Special Services

• Certified Mail: $3.45 (add $0.25 for return receipt)
• Registered Mail: $13.75 (add $0.25 for return receipt)
• Priority Mail Express: $25.50 (overnight delivery)

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 your local post office for the most up-to-date information.