Claymont is a census-designated place (CDP) in New Castle County, Delaware, United States.

This once rich ecosystem has been occupied steadily since before 1200 A.D. and has undergone numerous cultural and economic changes, most of which are still evident in the architecture and living patterns of the community today.

The Dutch colonists named the creek and settlement after the Chief of the Lenape Indians who occupied the region.

[4] Sitting strategically along the Delaware River, Claymont has been a two-way thoroughfare for travel to and from Philadelphia and Washington, D.C., since colonial days.

The community's religious, civic, historic, and social organizations play a major role in supporting its unique character.

[7][8] In what has been called "the single largest redevelopment project in Brandywine Hundred in the last 40 years", the 633-unit, 66-acre (270,000 m2) community of Brookview was razed beginning in 2007 to make way for the new urbanist, mixed-use Darley Green development.

[10] In 2019 construction began on the $71M Claymont Regional Transportation Center, which will replace the current small commuter rail stop one half mile to the south.

[11] Claymont is located at 39°48′02″N 75°27′35″W / 39.80056°N 75.45972°W / 39.80056; -75.45972 (39.8006685, -75.4596404),[12] in northeastern Brandywine Hundred, on the ridge line between the coastal floodplain of the Delaware River and the upland piedmont area of northwestern New Castle County.

The area generally considered to be Claymont encompasses the entire 19703 ZIP code,[5] which is bounded by the Pennsylvania border to the north, the Delaware River to the east, the CSX railroad line to the west, and Perkins Run creek to the south.

Claymont falls within New Castle County District 8, which is represented by Councilman John Cartier.

Claymont is represented in the United States Senate by Democrats Tom Carper and Chris Coons.