What is USPS First-Class Package Service?

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USPS First-Class Package Service offers the best rates for lightweight shipments. In most cases, delivery will be within three days to domestic destinations. Many international shipments even include tracking to the destination.

NOTE: First-Class Package Service is separate from the more familiar USPS First-Class Mail service. First-Class Mail is used to send letters and Large Envelopes/Flats. Learn more.


First-Class Package Service - domestic:

Best Option When: You are shipping lightweight packages - less than 1 lb - within the US and territories.
Delivery Timeline: Domestic delivery averages 1-5 business days.
This is not a guaranteed service; delivery may be delayed.
Service Overview: Domestic rates are determined by package weight and zone.
Delivery confirmation (tracking) is included for free on all domestic shipments.

Signature confirmation available for added fee.
Domestic Shipment insurance available for an added fee.
View the domestic rate table.
Maximum dimensions for domestic shipments: 22" x 18" x 15" (LxWxH)

Maximum weight for domestic shipments: up to 15.999oz.

NOTE: USPS accounts connected to ShippingEasy currently allow a maximum value of 15.99oz. As long as the package weighs less than 15.999oz, the USPS will accept the shipment at 15.99oz as having accurate postage.
There are restrictions for mailing restricted, prohibited, and hazardous materials, including cigarettes and smokeless tobacco.  Learn more about restrictions.


First-Class Package International Service:

Best Option When: You are shipping lightweight packages - less than 4 lbs - to international destinations.
Delivery Timeline: International delivery times vary by destination. First-Class Package Service is not recommended if a timely delivery is important.
Service Overview: International rates are determined by package weight and Country Group.
Available confirmation options depend on destination. Learn more.
Rates: View the international rate tables.
Restrictions: Maximum dimensions for international shipments: 24" Length, L+H+W= 36"
Maximum weight for international shipments: up to 4 lbs.
Some countries may have lower weight restrictions.  View Country-Specific Restrictions.


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