Contact Us

By Mail:
Intermountain Regional Office
12795 W. Alameda Pkwy.
P.O. Box 25287
Lakewood, CO 80225

By Phone:

  • Manhattan Project NHP Headquarters: 303-969-2700
  • Manhattan Project NHP Interim Visitor Contact Station -- Hanford Site: 509-376-1647
  • Manhattan Project NHP Visitor Contact Station -- Los Alamos Site: 505-661-6277
  • Manhattan Project NHP Visitor Center -- Oak Ridge Site: 865-576-6767

Email us

Last updated: March 28, 2016

Contact the Park

Mailing Address:

Manhattan Project National Historical Park
c/o NPS Intermountain Regional Office
P.O. Box 25287

Denver, CO 80225-0287


(505) 661-6277
This phone number is for the Los Alamos Unit Visitor Center. You may also contact the Oak Ridge Unit Visitor Center at (865) 576-6767 or the Hanford Unit Visitor Center at (509) 376-1647.

Contact Us