Brand Certified
United States Postal Service
3.5(24 reviews)
Certified by United States Postal Service • Aug 30, 2026
Business Details
309 Main St, Islip, NY
11751, 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 309 Main St 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 309 Main St in Islip, with popular services available at this location.
Reviews
3.5
24 reviews
5 stars
12
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1 star
7
- JRJacky RicoApr 11, 20265.0Mary was very helpful and kind. I am very grateful for her knowledge, patience... very much recommended.
- APAndrew PinskerApr 4, 20235.0Very good
- LMLeihshane MMay 13, 20163.0Generally this post office is not too busy or crowded and the service is quick. However, some of the ladies are a bit rude and look like they do not want to be there or help you, particularly this blonde woman who always wears her hair pulled back. I just called to ask a question and some lady slammed the phone in my ear after I thanked her for answering the question.
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.
What products and services can I find at the United States Postal Service at 309 Main St?
You can send mail and ship packages, get money orders, rent PO Boxes, apply for passports, buy gift cards, and more at this location.
What are the operating hours of this USPS location?
Monday through Friday from 9:00 AM to 5:00 PM, and Saturday from 9:00 AM to 1:00 PM. The post office is closed on Sundays.
Can I apply for a passport at this Post Office unit?
Yes, this location accepts first-time passport applications and may provide passport photo services by appointment.
Do I need an appointment for passport services at this USPS?
Most passport services require scheduling an appointment online, though limited walk-in hours may be available at select locations.
Where can I schedule an appointment for passport services?
You can schedule your passport appointment using the USPS online scheduler linked on their website.
Can I rent a PO Box at the USPS on Main St?
Yes, you can reserve and apply for PO Boxes online or in person at this location, with details provided on the USPS website.
Is there 24/7 access to the PO Boxes at this post office?
Most USPS locations offer 24/7 lobby access to PO Boxes, but access hours may vary by location, so you should check directly with this post office.
What nearby places can I visit before or after my trip to the USPS on Main St?
You might visit Robert Moses Beach Field 5 for beach fun and meals, Caroline's Flower Shoppe for gifts, or Racine Salon & Spa for beauty treatments nearby.
Are there any nearby banks to access after visiting the Post Office at 309 Main St?
Yes, Capital One Bank and Bank of America Financial Center are nearby, providing convenient banking services close to the post office.
How can nearby transit or transportation-related businesses help me access the USPS location?
Nearby services like New York Autobrokers can assist with vehicle needs, making it easier to travel to and from the post office at 309 Main St.
Brand Certified Facts from United States Postal Service
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Certified August 30, 2026Yext Knowledge Graph
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