The Northwest is a moving target on the American map
In short: Geography is rarely static. The Northwestern United States has physically migrated westward as the nation expanded, shifting from lands near the Allegheny Mountains to the rugged territories of the Pacific coast. This movement reflects how regional identities evolve alongside the physical expansion of national borders over several centuries.
The definition of the 'Northwest' is fluid and often depends on which specific states a source chooses to include. While Oregon and Washington are consistently part of the region, other states like Idaho, Montana, Wyoming, and Southeast Alaska are included by some but not all definitions. This ambiguity is further complicated by sub-regions: the 'Pacific Northwest' typically excludes areas east of the Rockies, while the 'Inland Northwest' refers to areas west of the Cascade Range.
Historically, the region has moved westward in tandem with U.S. expansion. In the early years of the country, land just west of the Allegheny Mountains was detached from Virginia and named the Northwest Territory. The area encompassing most of the Great Lakes territory to the east of the Mississippi River was held by this land for many years. It wasn't until later that the term shifted to encompass the old Oregon Territory, created between 1848 and 1950.
Today, the region is home to approximately 14.3 million people as of 2016. The population is heavily concentrated in its western reaches; Oregon and Washington account for 77% of the total population of the five-state region. While many cities are growing rapidly—including Seattle, Portland, and Boise—the geographic identity remains a complex interplay of historical movement and varying regional boundaries.
The shifting borders also reflect changing political and social movements. The area has been the subject of various proposals, ranging from conservative migration movements like the American Redoubt to more exclusionary ethnostate proposals. These overlapping identities highlight how geography is often as much about human perception as it is about physical land.
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- Summary by Intellect · source: Northwestern United States
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