The most level section is in the northeast corner, east of the curve of US 9W, sloping gently to the river. Here is located the village of Cornwall-on-Hudson, and the most developed section of the town proper, the area usually meant by Cornwall, just to the southwest of the village. The Town has equal frontage on the river south of the Village but is primarily State Park land and inaccessible due to a railroad throughway. To its west lies another residential area, Firthcliffe, named for the carpet factory once located here along the banks of Moodna Creek. Much of the town's population is concentrated in the village and this area. Across the river on its eastern shore borders on the towns of Fishkill and Philipstown in Dutchess and Putnam counties respectively.