Erie is a census-designated place (CDP) in Cass County, North Dakota, United States. The population was 54 at the 2020 census. Established in or after 1980 by the United States Census Bureau, the CDP is named for the village of Erie, which is within its boundary. Although the rectangular boundary includes a sizeable amount of farmland, there is in fact only one residence outside the village's boundary but within that of the CDP.