First-Class Mail (letters, flats ≤13 oz): 2–3 business days
| Service | Estimated Delivery | Tracking | Best For |
|---|---|---|---|
| First-Class Mail | 2–3 business days | No (letters) | Standard letters, bills, documents |
| Priority Mail | 2–3 business days | Yes | Packages, faster letters, insurance option |
| Priority Mail Express | 1–2 business days guaranteed | Yes | Urgent, time-sensitive, money-back guarantee |
~2,450 miles (3,940 km) coast-to-coast. Major air/ground networks connect NYC and Portland metro efficiently.
Use USPS Tracking for Priority/Express. For First-Class letters, consider Certified Mail (proof of mailing/delivery) or Informed Delivery (digital preview).