National Archives at Denver

Rocky Mountain Region

National News

1940 Census

Federal holiday icon All National Archives research rooms will be closed on Monday, May 28, in observance of Memorial Day. Museums in Washington, DC, and at the Presidential libraries will be open.
View all Federal Holidays.

We hold records from:

  • Colorado
  • Montana
  • New Mexico
  • North Dakota
  • South Dakota
  • Utah
  • Wyoming

Please note: North and South Dakota records created before 1972 are held in Kansas City.

Contact UsContact Us

We have a number of ways that we can assist you:

Archives Division

Our Regional Archives has both a Microfilm Research Room and an Archival Research Room. We have extensive microfilm holdings for genealogy research and general historical interest.

Federal Records Center

Our Denver facility also serves as a Federal Records Center, storing and servicing records for more than 100 Federal agencies, including the courts. We offer "Pick-up and Delivery" and other special services, including tailored workshops.

Ways to Reach Us

Mailing Address
National Archives
Rocky Mountain Region
P.O. Box 25307
Denver, Colorado   80225
(303) 407-5740

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National Archives at Denver >

The U.S. National Archives and Records Administration
1-86-NARA-NARA or 1-866-272-6272