Post office in Setauket-East Setauket

AgentData lists 8 post offices in Setauket-East Setauket, United States. Updated May 2026.

8 businesses0 with websites
Benedict Mailroom

Stony Brook, NY

Chapin Mailboxes

700, Health Sciences Drive, Stony Brook, 11790, NY

Irving Mailroom
Mount Sinai Post Office

457, Route 25A, Mount Sinai, 11766, NY

United States Post Office

450, Route 25A, Setauket-East Setauket, 11733, NY

United States Post Office

129, Main Street, Stony Brook, 11790, NY

Wagner Mailroom

Stony Brook, NY

Also in Setauket-East Setauket

Restaurant ()Place of worship ()Elementary school ()Fast food restaurant ()Cafe ()Convenience store ()Community center ()Bicycle rental service ()

Post office in nearby cities

Beckley ()Charleston ()Salisbury ()Williamsburg ()Rutland ()Ottumwa ()Lincoln ()Clarksburg ()

Frequently asked questions

How many post offices are in Setauket-East Setauket?

AgentData lists 8 post offices in Setauket-East Setauket as of May 2026.

Which post offices in Setauket-East Setauket have a website?

0 of 8 post offices in Setauket-East Setauket have a website with verified contact details.

Is this data free?

Yes. AgentData is completely free — no credit card, no trial period, no paid tiers.

How is this data collected?

Business listings are sourced from OpenStreetMap and verified through our web crawler, which checks websites for email addresses, phone numbers, and technology stacks.

Access this data via API
GET /api/local-businesses?category=post-office&city=setauket-east-setauket