Ground Advantage days, by route
Unlike Priority Mail, Ground Advantage really does scale with distance. Here's how USPS's standards spread across the contiguous US:
| USPS standard | Share of routes |
|---|---|
| 2 days | 3.2% |
| 2–3 days | 6.6% |
| 3 days | 17% |
| 3–4 days | 17% |
| 4 days | 31% |
| 4–5 days | 7.3% |
| 5 days | 18% |
Share of the 814,000 pairs of three-digit ZIP areas in the contiguous US, from USPS's Ground Advantage service standards effective November 1, 2026. A range means some ZIP codes in the pair take the longer number.
The most common standard is 4 days. Ranges are common too: 31% of routes show one, because some ZIP codes on the far side of an area need an extra day.
Sample routes
Routes between big cities often beat the overall mix above:
| Route | Miles | USPS standard (days) |
|---|---|---|
| New York → Los Angeles | 2,460 | 5 |
| Chicago → Houston | 940 | 3 |
| Atlanta → Miami | 610 | 3 |
| Boston → Washington, DC | 390 | 2 |
| Denver → Dallas | 660 | 3 |
| Seattle → Portland, OR | 140 | 2–3 |
| Phoenix → Las Vegas | 250 | 2 |
| Minneapolis → St. Louis | 470 | 2 |
What it is
Ground Advantage is USPS's everyday package service, up to 70 lb. It replaced First-Class Package Service and Parcel Select Ground in 2023, so it's what most small online orders ship by. It's usually the cheapest USPS option for packages under a few pounds; see USPS postage cost.
What counts as a day
USPS counts Saturdays, which gives it an edge over UPS and FedEx Ground on the calendar: a 3-day Ground Advantage package mailed Wednesday is due Saturday, while a 3-business-day UPS or FedEx package is due Monday. Work out the exact date.
USPS's own numbers
Days are counted from the day the carrier accepts the package (day 0), skipping Sundays and holidays. Holiday peak (mid-November to late December) can add a day or more. For a specific shipment, check the carrier's own tool.
Service information checked November 2026.
Other services
- USPS First-Class MailLetters, cards and large envelopes.
- USPS Ground AdvantageUSPS's everyday package service.
- USPS Priority MailFaster USPS packages, with Flat Rate boxes.
- USPS Priority Mail ExpressUSPS's fastest service, with a money-back guarantee.
- UPS GroundUPS's economy service, zip to zip.
- FedEx Ground and Home DeliveryFedEx's economy services, zip to zip.
Or compare every carrier at once on the delivery-time calculator.
Questions people ask
Why is my Ground Advantage package taking 5 days?
Because that's the standard for many routes: 25% of routes in the contiguous US can take 5 days under USPS's own standards, mostly long ones. Holidays and peak season add more.
Is Ground Advantage slower than UPS Ground?
Often by about a day in business days, but USPS delivers on Saturdays, so on the calendar they frequently arrive the same day. Compare both for your route on the delivery-time calculator.
Does Ground Advantage deliver on Saturday?
Yes. USPS delivers Ground Advantage Monday through Saturday and counts Saturday as a delivery day.