First State National Historical Park was established by President Obama on March 25, 2013 as the 400th unit of the National Park System. As such, it is managed by the same laws and regulations as other units of the National Park System by the National Park Service.
Last updated: August 1, 2018
New Castle Court House Museum
211 Delaware Street
New Castle, DE 19720
This phone number is not staffed. You can leave a message on the park's main phone number (302-544-6363) and we will return your call as soon as possible. If you are visiting one of the seven sites, and need specific information, please refer to the "Places to Go" page for phone numbers and addresses of each site.