The Mid-Atlantic is a region of the United States located in the overlap between the Northeastern and Southeastern states of the United States. Its exact definition differs upon source, but the region typically includes New Jersey, Maryland, Virginia, Delaware, West Virginia, District of Columbia, and Pennsylvania. Some sources include New York, while others exclude Pennsylvania. When discussing climates, Connecticut is often included with the Middle Atlantic states. However, according the U.S. Bureau of Labor Statistics, the states listed above are commonly accepted as the Mid-Atlantic region. The region has its origin in the Middle Colonies of the 18th century when its states were among the Thirteen Colonies of pre-revolutionary British America. As of the 2020 census, the region had a population of 60,783,913, representing slightly over 18% of the nation's population.