Southeastern United States

Southeastern United States
Region
American Southeast, the Southeast
A map of the United States with the Southeastern United States (in dark red) and states less frequently but sometimes considered part of the region (in light red)
Largest cities
States
Largest metropolitan areas
Area
  Total
580,835 sq mi (1,504,360 km2)
  Land540,511 sq mi (1,399,920 km2)
  Water40,324 sq mi (104,440 km2)  6.9%
Population
 (2018)
  Total
97,438,243
  Density150.5/sq mi (58.1/km2)
Time zoneEST (UTC-5)/CST (UTC-6);
AST (UTC-4) in PR and VI
  Summer (DST)EDT (UTC-4)/CDT (UTC-5);
No DST in PR and VI

The Southeastern United States, also known as the American Southeast or simply the Southeast, is a geographical region of the United States located in the eastern portion of the Southern United States and the southern portion of the Eastern United States. The region includes a core of states that reaches north to Maryland and West Virginia, bordering the Ohio River and Mason–Dixon line, and stretches west to Arkansas and Louisiana.

There is no official U.S. government definition for the region, and it is defined variably among agencies and organizations.