In Clinton County, NY 374 continues along the Narrows, intersecting with Harris Road, which is a dead-end local road. The route continues southward, intersecting with Narrows Road, which crosses over the Narrows and enters a partially developed community. The route continues to the southeast running along the eastern shoreline of Upper Chateaugay Lake. A short distance later, NY 374 heads to the east, along the shoreline into Merrill, a small community in the area. The road is moderately developed, until curving to the southeast and away from the shoreline of Upper Chateaugay Lake.