The Coastal Plain region is characterized by its predominantly flat landscape, with elevations generally remaining low.

This flat terrain is a defining feature of the region, making it distinct from the more mountainous areas of the United States. While there are some hills and rises, the highest elevations in the Coastal Plain are relatively modest compared to other regions like the Appalachian Mountains or the Rocky Mountains. The flatness of the Coastal Plain contributes to its unique ecosystems, including wetlands, forests, and coastal habitats. This topography has significant implications for agriculture, urban development, and water drainage, shaping the economic and environmental landscape of the area.