Rocky Mountain Archives branch of National Archives U.S.

Rocky Mountain Archives

Rocky Mountain Archives branch of the National Archives is located in Denver, Colorado. This facility has a Textual Research Room and a Microfilm Genealogy Room and is a facility for storing records from Federal agencies.

The records located at this archive are from: Colorado, Montana, New Mexico, North Dakota, South Dakota, Utah and Wyoming.

Here are a few of the records that are located at this facility, for genealogy research. Federal censuses for entire U.S. from 1790-1930. Indexes for the years 1880, 1900, 1910, 1920 and 1930 censuses.

The indexes are not available for every state or for every census year.

Revolutionary War records and bounty land warrant applications and pension records. Indian censuses, Utah polygamy prosecution case files and Colorado naturalization documents and more.

About our Archival Records:

At our Denver facility, we have nearly 50,000 cubic feet of original archival records dating from 1847 to the 1990s.

These records include:
paper documents
architectural drawings

The archival holdings are arranged by record group (RG), a body of records from an agency or bureau, identified by an (RG) number.


Subjects covered include, but are not limited to:
Indian agencies
Dam construction and other reclamation projects
National parks and forests
Home front during World War II
Proceedings of territorial courts

Microfilm Publications:

In addition to unique archival records, the Archives facility has a large collection of National Archives microfilm publications.

The microfilm reproduces records for the study of:
Public administration
Political science

Specific subjects include:
U.S. Diplomacy
Revolutionary War
Civil War and Reconstruction
Native American-Government relations
Westward expansion
World War II

The above information is just part of the holdings of the Rocky Mountain Archives.

Resources that are available: Three computers with Internet access, which include access to and Heritage Quest databases.

Two computers that access their collection of CD databases.

Check the following web page for public transportation and additional information.

Web page:


Address: National Archives Rocky Mountain Region,
17101 Huron Street
Broomfield, CO 80021


Fax #: 1 (303)407-5709

Phone: 1 (303) 604-4740 for the Archival Research.
Phone: 1 (303) 604-4740 for the Genealogy Research.

Archival Research: Monday thru Friday 8:30 am to 4 pm.
Closed Weekends and Holidays.


Go To:

1. About our Archival Records.
2. Frequently Requested Archival Holdings.
3. Finding Aids.
4. General Information Leaflet.
5. How to Search Our Materials/
6. Contact Us.

Also check the new address and phone number above.

Go to our page:

Pacific Alaska.

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