USPS takes the ounces, UPS takes over as the box grows. On our 2026-08-09 quotes the lines crossed near a pound and a half.
Whose name is whose
USPS launched Ground Advantage in July 2023 as its single ground package service, and the “ground” in the name collides with UPS Ground often enough to blur the brands. They are different companies' networks end to end: a Ground Advantage parcel rides with the mail and can land in your mailbox, while a UPS Ground parcel rides UPS trucks to the door. Neither carrier will accept the other's label.
| Fact | USPS Ground Advantage | UPS Ground |
|---|---|---|
| Sold by | USPS | UPS |
| Published transit | 2–5 business days | 1–5 business days |
| Weight ceiling | 70 lb | 150 lb |
| Size ceiling | 130 in length plus girth | Up to 108 in long |
| Tracking | Included | Included |
UPS states that 85% of UPS Ground packages arrive in three days or less, per the same ups.com page. The USPS window is an expectation rather than a commitment, and our own quotes below show how the two windows compare box by box.
Four boxes, both prices
| Box | Route | USPS Ground Advantage | UPS Ground |
|---|---|---|---|
| Poly mailer, 10 × 8 × 1 in, 0.5 lb | Newark to Chicago, IL | $8.86 4-5 business days | $10.69 2-3 business days |
| Document box, 12 × 9 × 2 in, 1 lb | Newark to Atlanta, GA | $9.91 4-5 business days | $10.69 2-3 business days |
| Candle gift box, 8 × 6 × 4 in, 1.5 lb | Newark to Los Angeles, CA | $13.42 4-5 business days | $13.40 4-5 business days |
| Flat curtain box, 24 × 16 × 3 in, 1.8 lb | Newark to Atlanta, GA | $15.67 4-5 business days | $11.07 2-3 business days |
The pattern holds across most of what we quote. Ounce-weight parcels belong to USPS, which prices below a pound by ounce band. Somewhere between one and two pounds the lines cross — the candle box came back at $13.42 and $13.40 — and bulky-but-light boxes swing hard to UPS, because postal pricing swells with box volume faster than UPS Ground's does. Past 70 lb the choice makes itself: that is the postal ceiling, and UPS Ground continues to 150 lb.
Picking without a rate chart
Under a pound
Ground Advantage nearly always wins on price here, and mailbox delivery means no one has to be home. Pay the UPS premium only when those two faster days matter.
One to two pounds
This is the crossover band where the winner changes with the destination and the box. Quote both every time; the answer is not stable enough to memorize.
Heavy or bulky
Big flat boxes, dense boxes and anything past the 70 lb postal ceiling ride UPS. Our capture's clearest spread was the flat curtain box: $11.07 against $15.67.
Where these facts come from
- USPS, USPS Ground Advantage — the 2–5 business day window, 70 lb and 130 inch ceilings, included tracking. Read 2026-08-10.
- UPS, Domestic shipping services — the 1–5 business day window, 150 lb and 108 inch limits, coverage of all 50 states and Puerto Rico, the three-days-or-less figure. Read 2026-08-10.
Carrier pages change without notice and quoted prices move daily. The dollar figures here are our checkout's quotes from 2026-08-09 on the exact boxes described, not a promise about yours.
Common questions
Is Ground Advantage UPS or USPS?
USPS. Ground Advantage is the Post Office's ground package service, launched in July 2023. UPS sells nothing under that name; its comparable products are UPS Ground and UPS Ground Saver.
Can a Ground Advantage package be dropped off at UPS?
A Ground Advantage label moves in the postal network, so hand it to USPS: a Post Office counter, a collection box it fits into, or a carrier pickup from your address. A UPS Ground label, likewise, needs a UPS location or driver.
Which one is cheaper for a small package?
On our 2026-08-09 quotes USPS won under a pound, $8.86 against $10.69 for a half-pound mailer, and the two landed at $13.42 and $13.40 at a pound and a half. The big flat box flipped to UPS at $11.07 against $15.67, so box size decides as much as weight.
Is UPS Ground faster than Ground Advantage?
UPS publishes 1–5 business days against USPS's 2–5, and on our short test lanes UPS Ground carried a 2-3 day window where Ground Advantage showed 4-5. On the Newark to Los Angeles run the two windows matched at 4-5 days.
Where does UPS Ground Saver fit in?
Ground Saver is UPS's slower economy tier and the closer price rival to Ground Advantage; that head-to-head has its own guide on this site. UPS Ground, compared here, is the faster standard service.