How much to mail a small priority box

The cost to mail a small Priority Mail box depends on the weight and dimensions of the box, as well as the destination zip code. Here are the current rates for Priority Mail small boxes:

Small Flat Rate Box (3.5" x 5.5" x 2.5")

• Weight: Up to 1 lb (16 oz)
• Cost: $7.50 (domestic), $24.50 (international)

Small Priority Mail Box (3.5" x 5.5" x 2.5")

• Weight: Up to 1 lb (16 oz)
• Cost: $8.15 (domestic), $25.15 (international)

Additional Weight

• Each additional ounce: $0.20 (domestic), $0.30 (international)

Destination Zone

• Zone 1 (US): $0.00 (free)
• Zone 2-8: $0.00 (free)
• Zone 9-10: $1.00
• Zone 11-20: $2.00
• Zone 21-50: $3.00
• Zone 51-60: $4.00
• Zone 61-80: $5.00
• Zone 81-90: $6.00
• Zone 91-100: $7.00

International

• Zone 1-2: $24.50
• Zone 3-4: $25.15
• Zone 5-6: $26.15
• Zone 7-8: $27.15
• Zone 9-10: $28.15

Please note that these rates are subject to change, so it's always best to check the official USPS website for the most up-to-date rates and fees.