Brand Certified
United States Postal Service
3.3(25 reviews)
Certified by United States Postal Service • Aug 30, 2026
Business Details
21 Long Island Ave, Sag Harbor, NY
11963, United States
Certified by United States Postal Service • Aug 30, 2026
(800) 275-8777
Certified by United States Postal Service • Aug 30, 2026
http://usps.com/postoffice
Certified by United States Postal Service • Aug 30, 2026
About
Certified by United States Postal Service • Aug 30, 2026
Post OfficeShipping ServiceCargo ServicePackaging Supply StoreLogistics ServiceMoney Order ServiceVisa and Passport OfficeUnited States Postal Service
Visit your local Post Office™ at 21 Long Island Ave to find everything you need to send mail and ship packages. Explore our other products and services like money orders, Post Office™ boxes, passports, gift cards, and more
Location
Certified by United States Postal Service • Aug 30, 2026
Hours
Certified by United States Postal Service • Aug 30, 2026
Monday9:00 AM - 5:00 PM
Tuesday9:00 AM - 5:00 PM
Wednesday9:00 AM - 5:00 PM
Thursday9:00 AM - 5:00 PM
Friday9:00 AM - 5:00 PM
Saturday9:00 AM - 1:00 PM
SundayClosed
Products & Services
1 list · 35 items
Explore offerings from United States Postal Service on 21 Long Island Ave in Sag Harbor, with popular services available at this location.
Reviews
3.3
25 reviews
5 stars
12
4 stars
2
3 stars0
2 stars
4
1 star
7
- CMChristopher Morales5 days ago1.0Gwen is by far the rudest laziest worker I have ever met. Had an issues for a delivery I didnt know was getting delivered by usps. It was held at postal office in sag. It was showing that it was there. She said nope nope. Not here. And I quote "what you need to do is stop ordering damn packages". Well Ms Gwen. I will not stop ordering packages and you need to find a job or career that best suites you. Because talking to people isnt your fortay. What a miserable lady. Oh and by the way, my package was there the whole time.
- RPRobin PiroJul 21, 20261.0My package was listed as undeliverable and then missing after it was scanned by the post office. Then they told me I had to get in touch with the company that sent me then package. Sag habit scanned the package and lost the package and then said I was better off going through the place I ordered from because it will take forever to put a claim in through the post office.
- GHg hJun 13, 20261.0When will internet be restored.. 2 days now Unable to pickup prescription
- TGTommy GaziNov 10, 20155.0Great place, great seasoned staff.
- JMJ MOct 12, 20155.0They WORK very hard. I'm very satisfied with their service's.
Frequently Asked Questions About United States Postal Service
Can I get a passport application at this Post Office?
Yes, Thousands of Post Offices™ accept first-time passport applications for the U.S. Department of State. Most of those locations can also take your passport photo. Please complete and print your passport application form before you apply.
Is an appointment needed for passport services?
Most Post Offices that offer passport services have set hours, and you'll need to schedule an appointment using our online scheduler. We also offer limited Passport walk-in hours at select locations.
Does this location take the photo needed for passports?
For first-time passport and photo services, please make an appointment using our online scheduler.
What is the cost to take a passport photo?
The current fee for a passport photo at USPS is $15.
When does this location do walk-in passports?
We offer limited Passport walk-in hours at select locations.
Can I get a PO Box online?
Yes, you can search for available PO Boxes and reserve one online at https://www.usps.com/manage/po-boxes.htm. The process is quick and secure, and you'll receive instructions for completing your setup in person.
How much is a small PO Box?
PO Box prices vary by location. You can check exact pricing for your area by visiting https://www.usps.com/manage/po-boxes.htm and entering your ZIP Code.
Can you get to the PO Boxes in the lobby after hours?
Most USPS locations offer 24/7 access to PO Boxes in the lobby. Access hours may vary by location, so check with your local Post Office for specific lobby hours.
How can I get a PO Box?
You can apply for a PO Box online or in person at your local Post Office. Just bring two valid forms of ID and your completed application if applying in person. To start online, visit https://www.usps.com/manage/po-boxes.htm.
What time can I check my PO Box weekly and on weekends?
You can check your PO Box during lobby hours, which often include extended hours or 24/7 access. Weekend access may vary. Check with your local Post Office for exact times.
Brand Certified Facts from United States Postal Service
This information is certified by United States Postal Service and published from the brand's official system of record. Data is distributed through an enterprise-grade knowledge management platform. Learn more about our data sources
Certified August 30, 2026Yext Knowledge Graph
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