Setauket was founded in 1655, the first settlement in what would become the town of Brookhaven. Prior to the 2020 census, the community was part of the Setauket-East Setauket CDP. The area was split in 2020 into two separate CDPs: Setauket and East Setauket.

Was there a battle of Setauket?

The Battle of Setauket (August 22, 1777) was a failed attack during the American Revolutionary War on a fortified Loyalist outpost in Setauket, Long Island, New York, by a force of Continental Army troops from Connecticut under the command of Brigadier General Samuel Holden Parsons.

When was Brookhaven founded?

The latter founding year was recognized in 1976, when the Brookhaven Town Bicentennial Commission proposed setting the date on the seal to 1655 in line with this first deed of settlement of the town of Brookhaven at Setauket on April 14, 1655.