Basketmaking, c. 1940, by Pablita Velarde. Source: National Park ServiceRegional definitions vary from source to source. New Mexico and Arizona (in dark red) are almost always considered the core, modern-day Southwest. The striped states may or may not be considered to be part of the same region. With the exception of Texas and Oklahoma – which are counted as part of the South – the Southwestern states are also classified as West by the U.S. Census Bureau. California is excluded from most definitions of the Southwest
