The contiguous United States contains 48 states, a figure representing every state physically connected without relying on insular territories like Alaska or Hawaii. This specific landmass forms a continuous block spanning the North American continent from the Atlantic to the Pacific.
Defining the Contiguous 48
When analysts refer to the contiguous US, they isolate the 48 states that share borders, creating a familiar map shape often called the "Lower 48." This definition excludes the non-contiguous states, focusing solely on the interconnected network that makes up the majority of the nation's land area. Understanding this distinction is crucial for accurate geographical discussions.
Geographic Scope and Scale
This connected region covers approximately 3,119,884 square miles, showcasing an immense diversity of landscapes from coastal plains to mountain ranges. The inclusion of every state here, except Alaska and Hawaii, means the territory stretches from the Atlantic seaboard to the shores of the Pacific Ocean. The width alone spans nearly 5,000 miles at its broadest points.
Key Inclusions and Exclusions
The list of states within this count includes major population centers and historical landmarks, all sharing land borders. It is helpful to visualize the specific exclusions to fully grasp the concept:
Alaska, located in the northwest extremity of the North American continent
Hawaii, the island chain situated in the Pacific Ocean
Consequently, the total count of states in this specific grouping remains fixed at 48.
Distinguishing State Count vs. Other Metrics
While the number 48 defines the states, other metrics like time zones or congressional districts apply differently to this region. The focus here remains strictly on the political divisions recognized as states. Observers should not confuse this count with the 50 total states of the union, which includes the two non-contiguous entities.
Historical Context of Expansion
The journey to include these 48 states involved significant historical events, such as the Louisiana Purchase and the Mexican-American War. The final configurations were largely solidified by the mid-20th century, following Hawaii's admission in 1959. The contiguous map reflects the territorial acquisitions that shaped the modern nation.
Travel logistics, climate studies, and infrastructure planning often rely on this 48-state framework. Referencing this specific area avoids the complexity of managing two distant regions. It provides a clear scope for discussions centered on the mainland United States and its interconnected ecosystems.
