Priority Mail
1-3 Business Days1 & Flat Rate Pricing2
Priority Mail® service includes tracking and delivery in 1-3 business days1. Check delivery time estimates on the Priority Mail Delivery Map. Priority Mail Flat Rate® lets you ship packages up to 70 lbs to any state at the same price. Ship from Post Office™ locations or from your home or business with Click-N-Ship® service. Prices start at $7.50.
ALERT: As a result of the ongoing COVID-19 emergency, certain packages may take longer than usual to arrive. Priority Mail Express overnight service is unaffected. Learn More
Features & Pricing
- Fast delivery time: 1-3 Business Days1
- Free Package Pickup3 service at your home or office
- Includes USPS Tracking®4 and up to $50 of insurance5 with most shipments6 (restrictions apply)
- No surcharges for fuel; resident or rural delivery; or Saturday7 delivery
- Flat Rate, regional, and prepaid pricing (retail only) available
- Prepaid Forever® Priority Mail Flat Rate. Except for Priority Mail Flat Rate packaging, Priority Mail prices are based on weight and zone. With Prepaid Forever Priority Mail Flat Rate, you get the same Flat Rate pricing with the added convenience of Forever postage.
Weight, Size, & Shape Requirements
- Maximum weight is 70 lbs.
- Maximum combined length and girth (girth is the distance around the thickest part) is 108″.
- When sealing a Flat Rate Envelope or Box, the container flaps must be able to close within the normal folds.
Priority Mail Flat Rate Products
Expand All| Free Supplies8 | Shipping Price | Dimensions | Great For… |
|---|---|---|---|
| Flat Rate Envelope | $7.55 Commercial Base $7.75 at Post Office & Online |
12 1/2″ x 9 1/2″ |
Letters Documents Manuscripts |
| Gift Card Flat Rate Envelope | $7.55 Commercial Base $7.75 at Post Office & Online |
10″ x 7″ |
Oversized Greeting Cards Gift Cards |
| Window Flat Rate Envelope | $7.55 Commercial Base $7.75 at Post Office & Online |
10″ x 5″ 12 1/2″ x 9 1/2″ |
Pre-addressed Envelopes |
| Small Flat Rate Envelope | $7.55 Commercial Base $7.75 at Post Office & Online |
10″ x 6″ |
Small Documents Passports |
| Padded Flat Rate Envelope | $8.15 Commercial Base $8.40 at Post Office & Online |
12 1/2″ x 9 1/2″ |
Clothing Books Boxed Jewelry |
| Legal Flat Rate Envelope | $7.85 Commercial Base $8.05 at Post Office & Online |
15″ x 9 1/2″ |
Legal Documents |
| Small Flat Rate Box | $8.05 Commercial Base $8.30 at Post Office & Online |
Outside: 8 11/16″ x 5 7/16″ x 1 3/4″ Inside: 8 5/8″ x 5 3/8″ x 1 5/8″ |
Brochures Small Electronics |
| Medium Flat Rate Box — 1 (top-loading) | $13.60 Commercial Base $15.05 at Post Office & Online |
Outside: 11 1/4″ x 8 3/4″ x 6″ Inside: 11″ x 8 1/2″ x 5 1/2″ |
Office Supplies Shoes |
| Medium Flat Rate Box — 2 (side-loading) | $13.60 Commercial Base $15.05 at Post Office & Online |
Outside: 14″ x 12″ x 3 1/2″ Inside: 13 5/8″ x 11 7/8″ x 3 3/8″ |
Office Supplies Shoes |
| Large Flat Rate Box | $18.70 Commercial Base $21.10 at Post Office & Online |
Outside: 12 1/4″ x 12 1/4″ x 6″ Inside: 12″ x 12″ x 5 1/2″ |
Laptop Computers Gifts etc. |
| APO/FPO/DPO Flat Rate Box | $17.20 Commercial Base $19.60 at Post Office & Online |
Outside: 12 1/4″ x 12 1/4″ x 6″ Inside: 12″ x 12″ x 5 1/2″ |
Sending Gifts to Troops |
| Large Flat Rate Board Game Box | $18.70 Commercial Base $21.10 at Post Office & Online |
Outside: 24 1/16″ x 11 7/8″ x 3 1/8″ Inside: 23 11/16″ x 11 3/4″ x 3″ |
Board Games |
| Prepaid Forever® Priority Mail Flat Rate® Packaging | $7.75 at Post Office & Online |
Various Sizes Available |
Various Options |
1. In most cases, the expected delivery date printed on your receipt or provided at checkout will reflect a delivery time of 1, 2, or 3 business days and is based on origin, destination, and drop-off time. The expected delivery data does not come with a money-back guarantee. Back ^ to legal disclaimer 1
2. For mailable items up to 70 lbs. Back ^ to legal disclaimer 2
3. For details on free Package Pickup, visit Schedule a Pickup. Back ^ to legal disclaimer 3
4. Excludes Prepaid Forever Priority Mail Flat Rate products. Back ^ to legal disclaimer 4
5. Available only for certain products and to certain destinations. Restrictions and exclusions apply. Insurance does not cover certain items. For details, visit 609.4.3 (Non-payable Claims), 609 (Filing Indemnity Claims for Loss or Damage), and 503.4 (Insured Mail) of the Domestic Mail Manual. Back ^ to legal disclaimer 5
6. To qualify for included insurance, Priority Mail domestic shipments must have the applicable USPS tracking barcode. Insurance is not included for Priority Mail shipments sent using Priority Mail Open & Distribute, Premium Forwarding Service-Residential or Premium Forwarding Service-Commercial. For shipments valued at more than $50, additional insurance may be available for purchase. When additional insurance is purchased, it replaces the included insurance. Back ^ to legal disclaimer 6
7. If Saturday is a national holiday, Priority Mail Express service may be available for an added fee.Back ^ to legal disclaimer 7
8. Boxes and envelopes are delivered with your regular mail usually within 7 to 10 business days. Back ^ to legal disclaimer 8