As of April 15, 2008, there are 76 NPS-recognized THPOs. These Indian tribes have assumed the responsibilities of the State Historic Preservation Officers for their tribal lands. These 76 sovereign governments have a land base exceeding 34 million acres spannning 24 states.
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Click on any state to access specific information regarding THPOs. Click HERE to see the entire THPO list.
This map lists NPS-recognized THPO programs. It does not indicate NATHPO membership