USPS First Class Package

USPS First Class Package: Fast Delivery Guaranteed

When shipping using USPS, you have to consider the USPS First Class Package. Among the different services that USPS has to offer, the USPS First Class Package stands out and as you read on, you will understand why.

What is USPS First-Class Package service?

USPS First-Class Package is a USPS shipping option designed for shipping lightweight packages weighing up to 15.999 ounces.

When utilizing the USPS First-Class Package, it’s important to dispatch your items in an envelope, poly mailer, or an unbranded box, as the use of USPS-branded packaging is prohibited.

This service allows you to send your packages to destinations all across the United States, including U.S. territories such as Puerto Rico and the U.S. Virgin Islands, P.O. Boxes, and numerous APO/FPO/DPO locations.

USPS First-Class Package sizes

Individuals and businesses alike can utilize USPS First-Class Package Service for the purpose of sending lightweight packages weighing less than 1 pound.

This versatile service permits shipments to be directed to residential or commercial addresses, as well as to any P.O. Box located within the United States and its affiliated territories.

USPS First-Class Package Service also accommodates the shipping of mail items that wouldn’t typically adhere to standard mailing criteria.

Here are some of those criteria:

1. Letters

Letters must not exceed a weight of 3 ½ ounces and can have dimensions ranging from 3 ½ inches to 6 1/8 inches in height, 5 inches to 11 ½ inches in length, and a thickness spanning from 0.007 inches to ¼ inch.

2. Large Envelopes

Large envelopes should not surpass a weight of 13 ounces and must fit within the size parameters of 12 inches in height, 15 inches in length, and ¾ inches in thickness.

3. Packages

Packages must not exceed a combined length and girth measurement of 108 inches.

It’s worth noting that irregularly shaped packages may incur an additional surcharge.

The contents of these shipments may include documents or personal correspondence, with the exception of packages containing invoices, receipts, incidental advertising materials, and other documents pertaining to the merchandise enclosed within the parcels.


How Do You Send First-Class Packages?

1. Measure Your Package

When it comes to preparing domestic shipments, a crucial step is determining the dimensions of your package.

Begin by measuring your package to ensure it can smoothly pass through automated processing equipment.

If the size falls within acceptable parameters, you won’t incur any extra fees. Additionally, remember to select a box that provides sufficient space to securely accommodate the items you’re sending.

2. Pack Your Box

Next, focus on packing your box to safeguard its contents and ensure it reaches its destination undamaged.

A helpful practice is to use tape to seal the box securely on all sides. Once your package is properly packed, proceed to address it.

Choose an appropriate mail service, calculate the necessary postage, and apply it. Correct postage is instrumental in ensuring your package arrives punctually.

3. Get Postage Prices

Should you require postage rates for different services, you can input your package details into the USPS Postage Calculator.

4. Ship Your Package

The final step involves shipping your package. You have several options: you can request complimentary package pickups, drop small packages into a blue collection box, visit a post office station, or leave your box with an Approved Postal Provider.



USPS First-Class Package service offers a cost-effective and efficient way to send lightweight packages weighing up to 15.999 ounces across the United States and its territories, including Puerto Rico and the US Virgin Islands.

Unlike USPS first-class mail, this service is tailored for packages and poly mailers up to 1 pound in weight, with swift nationwide delivery in most cases.

To make the most of this service, it’s essential to measure your package carefully and choose appropriate packaging.

By following the steps outlined, you can ensure your package is ready for efficient processing and timely delivery.

USPS First-Class Package Service provides a reliable option for individuals and businesses looking to send small parcels, and its versatility accommodates various package sizes and shapes.

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