Riverhead is a town in Suffolk County, New York, United States, on the north shore of Long Island.

The smaller hamlet of Riverhead lies within it, and is the town's principal economic center.

Iron Pier, Wading River, and Reeves Beach each offer boating access for residents and visitors alike.

[5] European colonists purchased the "Southold land" from the local Algonquian-speaking Native Americans and Shinnecock Indian Nation in 1649.

On March 13, 1792, the Legislature passed a bill splitting off this section under the name River Head.

[7] Riverhead is bounded by Long Island Sound to the north, Southold to the east, Southampton to the southeast, and Brookhaven to the southwest and west.

Long Island has one of the northernmost humid subtropical climates (Köppen Cfa) in the United States.

The National Weather Service numbers are from the Research Farm near Long Island Sound.

[16] It is owned by East End Local Media Corp., an independent company based in Riverhead.

The only active station is Riverhead, which is also used as the western terminus of the Railroad Museum of Long Island.

The Town of Riverhead is served primarily by Suffolk County Transit and Hampton Jitney bus routes.