Postage from Arizona to Mexico: Not a Domestic Shipment—Use International Rates

You cannot send a postcard from Arizona to Mexico using US domestic postage. Arizona is a US state; Mexico is a foreign country. This is international mail.

Current USPS Rates (2024)

• Postcard (international): $1.65 (First-Class Mail International).
• Letter (1 oz, international): $1.65 (Global Forever Stamp).
• Delivery: 7–21 business days (no tracking).

Requirements

• Address format: Name, Street, Colony/Neighborhood, City, State, POSTAL CODE, MEXICO.
• Customs form: PS Form 2976 (green sticker) for postcards/letters <16 oz / $400 value.
• No prohibited items (seeds, liquids, cash).

Better Options

• Tracking: First-Class Package International (~$15+).
• Speed: UPS/FedEx/DHL (2–5 days, $30+).
• Digital: Email, WhatsApp, postcard apps (instant, free).