Riverhead Home Inspection Completed Full Inspections In Riverhead 10/18/2017 952 Roanoke Ave 5/31/2016 394 Circlewood 11/18/2015 3525 Sound Ave 9/19/2015 5727 Sound Ave 7/12/2015 69 Kerry Ct 6/24/2015 30 Tyler Dr 10/29/2014 73 Fox Run Ln 5/19/2011 123 Duryea St 2/6/2011 155 Grant Dr Back to Completed Home Inspections Riverhead is a town within Suffolk County, New York, on the north shore of Long Island. As of the 2010 census, the population was 33,506. The town rests on the mouth of the Peconic River, from which it derives its name. Since 1727, Riverhead has been the county seat of Suffolk County. The smaller hamlet of Riverhead lies within it, and is the town’s principal economic center. The town is 166 miles (267 km) southwest of Boston via the Orient Point-New London Ferry, and is 76 miles (123 km) northeast of New York City.