We have found 6 properties on Cornwallis Rd, Setauket- East Setauket, NY. Average price per square feet on Cornwallis Rd is $204. It is 2.9% lower than average price per sqft Setauket- East Setauket. Average sale price on Cornwallis Rd is $507,500. It is 14.5% lower than average sale price in Setauket- East Setauket.