Wanderlust World Wanderlust World The U.S. Northwest region (Idaho, Montana, Oregon, Washington, Wyoming) had a combined population of ~16.4 million per the 2020 Census (~4.9% of U.S. total).
| State | Population |
|---|---|
| Washington | 7,705,281 |
| Oregon | 4,237,256 |
| Idaho | 1,839,106 |
| Montana | 1,084,225 |
| Wyoming | 576,851 |
Note: The original source incorrectly listed California as part of the Northwest. California is West Coast / Southwest, not Northwest. The five-state definition above is standard (Census Division: Pacific Northwest + Mountain Northwest).
Current estimates (2023–24) are ~1–2% higher due to growth in Idaho, Washington, Oregon.