USPS First Class vs UPS Ground: Cost, Speed and Limits

USPS First Class vs UPS Ground is now really USPS Ground Advantage vs UPS Ground, because USPS replaced First-Class Package Service with Ground Advantage on July 9, 2023. For packages under 1 lb going to homes, USPS Ground Advantage is usually cheaper; for heavier boxes, business addresses and anything over 70 lbs, UPS Ground often wins or is the only option.

First-Class Mail still exists, but only for letters, cards and flat large envelopes, not for boxes or thick padded mailers. This guide compares the USPS package service that took First Class’s place with UPS Ground on cost drivers, speed, coverage, tracking and insurance.

What Is USPS First Class for Packages Now?

USPS Ground Advantage is the service that took over from First-Class Package Service, Retail Ground and Parcel Select Ground in July 2023. It carries packages up to 70 lbs in 2 to 5 days, and it kept First Class’s best feature for light parcels: pricing in ounce tiers below 1 lb (up to 4, 8, 12 and 15.999 ounces).

First-Class Mail is a separate product for envelopes. A large envelope (flat) can weigh up to 13 ounces, but it must stay flat, flexible and uniformly thick, and First-Class Mail letters and flats can’t get USPS Tracking. If you’re sending a small item in a rigid or lumpy mailer, it ships as a package, which today means Ground Advantage or Priority Mail.

How Do USPS First Class (Ground Advantage) and UPS Ground Compare?

Which Is Cheaper, USPS First Class or UPS Ground?

For light packages, USPS is usually cheaper. Ground Advantage prices anything under 1 lb in ounce tiers, while UPS bills a fraction of a pound as a full pound, and USPS adds no residential surcharge. A 5-ounce phone case shipped to a home is the classic case where USPS wins clearly.

As packages get heavier, the gap narrows and often reverses. UPS Ground pricing rises more slowly with weight, and on deliveries to businesses no residential surcharge applies, so mid-weight and heavy boxes are often cheaper with UPS, particularly at commercial rates. Above 70 lbs, UPS Ground is the only option of the two.

Box size matters too. UPS charges dimensional weight on every package (length × width × height ÷ 139 on daily rates). USPS charges it only on boxes over 1 cubic foot, and since July 12, 2026 it uses the same 139 divisor for rectangular parcels, rounding each side up to the next whole inch. For the exact answer, compare both services for your package in the ParcelPath rate calculator, which shows discounted rates of up to 89% off USPS and up to 85% off UPS retail.

Which Is Faster, USPS First Class or UPS Ground?

On most routes the two are close, and the edge depends on distance. UPS Ground delivers in 1 to 5 business days across the contiguous U.S., with nearby ZIP Codes often the next day. USPS Ground Advantage is listed at 2 to 5 days, with longer times to Alaska, Hawaii and other offshore destinations.

For long cross-country routes, UPS Ground’s day-definite schedule is often a little more predictable. For short routes to homes, Ground Advantage is usually just as quick. Neither service carries a money-back guarantee: UPS says its Service Guarantee remains suspended for UPS Ground, and Ground Advantage has a delivery standard, not a guarantee.

Which Addresses Can Each Service Reach?

USPS delivers to every U.S. address, including P.O. Boxes and APO/FPO/DPO military addresses. UPS doesn’t deliver to P.O. Boxes and needs a street address, so if a customer only gives a P.O. Box, USPS is the practical choice.

UPS Ground serves all 50 states, with longer transit times to Alaska and Hawaii. UPS adds delivery area surcharges for many rural and remote ZIP Codes, which USPS doesn’t charge. If you ship mostly to rural customers, that’s another point in USPS’s favor. UPS also offers UPS Ground Saver, an economy service for residential deliveries that’s worth comparing against Ground Advantage.

How Do Tracking and Insurance Compare?

Both services include tracking at no extra charge, with scans at acceptance, in transit and at delivery, plus email and text notifications. The old idea that “First Class has no tracking” applies only to First-Class Mail letters and flats, not to Ground Advantage packages.

Both also include $100 of coverage. USPS Ground Advantage includes up to $100 of insurance for loss or damage, and you can buy more coverage up to $5,000; our USPS insurance guide explains how claims work. UPS includes $100 of declared value, and you can declare more. Through ParcelPath you can also add Shipsurance coverage to UPS or USPS labels.

Which Should a Small Business Use?

Most small sellers do best by splitting shipments by package profile instead of picking one carrier:

• Use USPS Ground Advantage for anything under 1 lb, most light parcels to homes, P.O. Box and military addresses, and rural destinations.
• Use UPS Ground for heavier boxes, shipments to business addresses, long-distance routes where a predictable schedule matters, and anything over 70 lbs.
• Compare both for mid-weight boxes and large, light boxes, where discounts and zones decide the winner.

ParcelPath is free to use, with no subscription, per-label fee or minimum volume, so you can price both carriers on every order. You also don’t need a printer: UPS labels work with Mobile Barcode at The UPS Store, and USPS labels work with Label Broker at the Post Office. For more on each carrier, see our guide to UPS shipping rates, tracking and services, our USPS frequently asked questions and the wider library of shipping resources.

Frequently Asked Questions

Does USPS First Class still exist for packages?

No. USPS replaced First-Class Package Service with USPS Ground Advantage on July 9, 2023. Ground Advantage kept ounce-based pricing for packages under 1 lb and raised the weight limit to 70 lbs. First-Class Mail still exists for letters, cards and large envelopes up to 13 ounces, but those can’t be tracked.

Is USPS First Class cheaper than UPS Ground?

For light packages, usually yes. USPS Ground Advantage, the successor to First Class, prices parcels under 1 lb in 4, 8, 12 and 15.999 ounce tiers and has no residential surcharge, while UPS bills at least 1 lb and adds a residential charge on home deliveries. Heavier packages to businesses are often cheaper with UPS Ground.

Is UPS Ground faster than USPS Ground Advantage?

It depends on the route. UPS Ground takes 1 to 5 business days in the contiguous U.S. and often delivers nearby ZIP Codes the next day. USPS Ground Advantage is listed at 2 to 5 days, with longer times to Alaska, Hawaii and offshore areas. On short routes to homes the two are usually close.

Can UPS Ground deliver to a P.O. Box?

No. UPS doesn’t deliver to P.O. Boxes and needs a physical street address. USPS Ground Advantage delivers to every U.S. address, including P.O. Boxes and APO/FPO/DPO military addresses, so if a customer gives only a P.O. Box, USPS is the service to use.

Do USPS Ground Advantage and UPS Ground include insurance?

Both include $100 of coverage. USPS Ground Advantage includes up to $100 of insurance against loss or damage, and you can buy more up to $5,000. UPS Ground includes $100 of declared value, and you can declare a higher value. Third-party coverage such as Shipsurance is another option for valuable items.

Sources

• USPS: USPS Ground Advantage (delivery time, limits, ounce tiers, included insurance)
• USPS Domestic Mail Manual 503: Extra Services (insurance and USPS Tracking eligibility)
• USPS Domestic Mail Manual 223: dimensional weight rules (revised July 12, 2026)
• UPS: Service Guarantee
• UPS Rate and Service Guide, ups.com (UPS Ground delivery times, weight and size limits, declared value, surcharges)

Explore more carrier comparisons in our shipping services and solutions hub.

Part of our USPS Frequently Asked Questions guide. Related: USPS Shipping Guide, FedEx Shipping Guide, Does USPS Deliver FedEx Packages.