There's two answers that can be given here.
If we ignore the term 'domesticated', turkey populations were managed for food across the entirety of their natural range: Erin Thornton at WSU has an excellent map.
Taking into account the term 'domesticated' (which implies distinct morphological and genetic markers from wild populations), there are really only three areas on this map that qualify. First is Central Mexico and the Mexican gulf coast, where M. g. gallopavo was originally domesticated. Domesticated M. g. gallopavo was also introduced into Northern Mesoamerica and the Yucatan by trade, where they coexisted with undomesticated (but otherwise similarly exploited) populations of M. ocellata. Thirdly, turkeys were independently domesticated in the Southwest, where the map depicts M. g. merriami. This domesticated population is most closely related to M.g. silvestris and M. g. intermedia. As before, Southwesterners managed their domesticated turkeys seemingly identically with how they managed native Merriam's turkeys (M. g. merriami). Turkey management elsewhere was often similar to these and commonly included human feeding of captive birds, but we don't consider these birds domesticated.
[1] Erin Kennedy Thornton, Introduction to the special issue - Turkey husbandry and domestication: Recent scientific advances, Journal of Archaeological Science: Reports, Volume 10, 2016, Pages 514-519, https://doi.org/10.1016/j.jasrep.2016.07.016.
