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.
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