US Post Office Hours: Lobbies, Counters, and Holidays

Most post offices close at 5 PM on weekdays — but that’s the retail counter. The lobby with your PO box may be open until 6, or midnight, or around the clock. Plenty of people show up at 5:30 thinking they can buy stamps and find a locked door. The counter and the lobby are two different things with two different schedules.

Standard USPS Post Office Hours

The most common retail counter schedule at a full-service post office:

• Monday–Friday: 8:30 AM – 5:00 PM
• Saturday: 9:00 AM – 12:00 PM or 9:00 AM – 1:00 PM
• Sunday: Closed

High-traffic locations in cities or near shopping centers often run until 6 PM on weekdays. Smaller community post offices — and there are roughly 11,000 of them across the US, mostly in rural areas — may close at noon or 1 PM on weekdays and have no Saturday hours at all.

The only reliable way to know your branch’s exact hours is the USPS Post Office Locator{:rel=“nofollow”}. It shows current hours, service availability, and any closures, updated in real time. If you’re the type who’d rather just call: the national USPS customer line (1-800-275-8777) can pull up hours for any location by ZIP.

What Each Service Type Has for Hours

Not every service in a post office runs on the same clock.

Lobbies get the most flexibility. Some post offices lock the lobby when staff leaves; others leave it open 24 hours for PO box holders. If you rely on after-hours lobby access, check the locator specifically for “lobby hours” — it’s listed separately from retail.

Self-service kiosks (formally Automated Postal Centers) can handle stamps, shipping labels, flat-rate boxes, and package weighing with no staff involved. They’re the best option when you need to get something out after the counter closes. Not every location has one, though — the locator will tell you.

Is the Post Office Open on Saturday?

Most main post offices are open Saturday morning. The typical Saturday window is 9 AM to noon or 9 AM to 1 PM — shorter than a weekday by three to four hours. Expect lines, especially in the hour before closing.

(Passport appointments on Saturdays are offered at select locations. If that’s why you’re going, book through the USPS scheduler before you show up — walk-ins for passports are hit or miss on Saturdays.)

Community post offices and smaller branches often skip Saturday hours entirely. The locator will flag this.

Is the Post Office Open on Sunday?

Retail counters: no. Post office buildings are closed on Sundays for walk-in service.

Delivery is a different story. USPS delivers Priority Mail Express on Sundays, and Amazon packages are delivered via USPS on Sundays in many metro areas. But the building itself, the lobby, the counter — closed.

If you have a package coming via USPS Priority Mail Express and need to know when it’ll actually arrive, Sunday delivery typically happens by 10:30 AM with same-day confirmation.

Is the post office open on holidays?

No. USPS observes 11 federal holidays each year. On these days, post offices close and mail delivery stops entirely:

1. New Year’s Day (January 1)
2. Martin Luther King Jr. Day (3rd Monday in January)
3. Presidents’ Day / Washington’s Birthday (3rd Monday in February)
4. Memorial Day (last Monday in May)
5. Juneteenth National Independence Day (June 19)
6. Independence Day (July 4)
7. Labor Day (first Monday in September)
8. Columbus Day (second Monday in October)
9. Veterans Day (November 11)
10. Thanksgiving Day (fourth Thursday in November)
11. Christmas Day (December 25)

When a holiday falls on Sunday, USPS observes the following Monday. When it falls on Saturday, they observe the prior Friday.

The day after major holidays — particularly Thanksgiving and Christmas — is not a federal holiday, but post offices are often understaffed and package processing backs up. Black Friday (the day after Thanksgiving) is a notable example — for the specific question, see mail delivery on Black Friday. If you’re checking on a USPS delivery during this window, a one-day delay isn’t unusual.

What time does the post office close?

Standard retail counters close at 5 PM on weekdays. Some busier locations stay until 6 PM. Lobbies often stay open later, and kiosks run 24/7 where installed. Saturday closing times run between noon and 1 PM at most full-service offices.

Can I pick up a package at the post office after hours?

Only if your branch has a 24-hour lobby and the package is being held in a PO box or at a self-service counter inside the lobby. Packages held at the retail counter require staff to retrieve them — you can’t get those after hours. The notification slip you receive will have the hold location; if it says “customer counter,” you need to go during retail hours.

Can I add delivery instructions or request redelivery online?

Yes. USPS lets you add delivery instructions through your USPS.com account — you can request a specific drop location, a neighbor’s address, or schedule redelivery for a different date, all without going to the post office.

The Part That Catches People Off Guard

Counter hours and lobby hours are genuinely different, and USPS doesn’t always make that obvious on the front door.

Some post offices post both sets of hours. Others only post retail hours, which means you might arrive at 6 PM for PO box access and find a “CLOSED” sign — even though the lobby is technically still accessible through a different entrance or wasn’t locked to begin with.

If you have a PO box and rely on after-hours access, do a test visit before you depend on it. Not all lobbies are open as late as the locator says — and some that claim 24-hour access are sporadically locked overnight in practice.

The locator tool is accurate, but it’s only as good as what each postmaster updates. Small-town offices sometimes have informal hours that deviate from what’s listed. If consistent access matters to you — for holding mail or picking up regular deliveries — a quick call to the branch directly is still the safest check.

USPS retail counter hours haven’t changed significantly in years. What has changed is the expansion of Sunday Amazon deliveries and the slow rollout of additional kiosk locations. If your nearest office doesn’t have a kiosk yet and the counter hours don’t work for your schedule, the easiest fix is scheduling your shipments for drop-off during Saturday morning hours — still shorter than a weekday, but a reliable window at most full-service locations.