The National Archives and Records Administration: A Genealogy Resource Guide

The National Archives and Records Administration (NARA) holds more than 13 billion pages of textual records, 44 million photographs, and 40 million maps and charts — making it the single largest repository of primary source material for American genealogical research. For anyone tracing family lines through census rolls, military service papers, naturalization files, or land patents, NARA is not a starting point so much as an inevitability. This page covers what NARA actually holds, how researchers access it, which record types serve which research problems, and where NARA ends and other repositories begin.

Definition and scope

NARA is an independent federal agency established by the National Archives Act of 1934 (44 U.S.C. § 2101 et seq.) and charged with preserving federal records of enduring historical value. Its mandate covers records created by every branch of the federal government — not just the executive — which is part of what makes it so dense with genealogical material. Where a state archive holds records produced within its borders, NARA holds records produced by the federal government about people across all states and territories.

For genealogists, the scope breaks cleanly into a few major categories:

  1. Decennial census records — Population schedules from 1790 through 1950 (the 1950 census was opened in April 2022 under NARA's 72-year access rule). These are the backbone of most American family research; see the US Census Records page for full detail.
  2. Military records — Service records, pension files, draft registrations, and bounty land warrants spanning the Revolutionary War through the mid-20th century. Pension files in particular are biographical treasure: widows claiming benefits often submitted depositions detailing marriage dates, children's names, and place of origin. More on accessing these at Military Records Genealogy.
  3. Immigration and naturalization records — Passenger lists, declaration of intention ("first papers"), and petitions for naturalization. The Immigration and Naturalization Records page covers the full spectrum of these documents.
  4. Land records — Federal land patents, homestead applications, and General Land Office records for the 30 public-land states. These are covered at Land and Property Records.
  5. Freedmen's Bureau records — An often under-discussed collection of roughly 1.4 million documents created by the Bureau of Refugees, Freedmen, and Abandoned Lands (1865–1872). Critical for African American Genealogy research, with access details at Freedmen's Bureau Records Access.

How it works

NARA operates through a distributed network of facilities. The flagship research facilities sit in Washington, D.C. (Archives I, focusing on older records) and College Park, Maryland (Archives II, for 20th-century federal records). Beyond those two anchor locations, 15 regional facilities across the country hold records with regional relevance — a researcher in Atlanta may find records at the Atlanta Regional Archives that never left the Southeast.

Access to NARA records runs along three tracks:

Understanding primary vs. secondary sources matters acutely at NARA: an original pension application is a primary source created at the time of the event; a compiled index is a secondary source and may contain transcription errors. Always verify against the original document.

Common scenarios

The researcher who comes to NARA is usually solving a specific problem: a missing immigrant origin, a military ancestor with no paper trail at the state level, a land claim that predates county courthouse records.

A typical workflow for an immigrant ancestor might begin at FamilySearch or Ancestry.com to locate a digitized passenger list, then pivot to NARA's naturalization files to find a declaration of intention that names the specific village of origin — the kind of detail that transforms a brick wall into a door. This is the logic behind Brick Wall Genealogy Strategies: layering federal record types sequentially.

For Civil War research, the combination of a Compiled Military Service Record (CMSR), a pension file, and a bounty land warrant application can reconstruct a soldier's entire documented arc — enlistment through death — from a single federal repository.

Decision boundaries

NARA is not the repository for everything. State-level vital records — birth, marriage, and death certificates for most of American history — live at State Archives or county courthouses, covered separately at Vital Records Genealogy. Church records, which often predate civil registration by generations, are an entirely different track explored at Church and Religious Records.

The distinction that trips up new researchers most often: NARA holds records the federal government created, not records about federal subjects held elsewhere. A naturalization that occurred in a state or county court before 1906 — when INS centralized the process — may sit in a county courthouse, not in Washington. Post-1906 naturalizations are generally at NARA. That 1906 line is one of the cleaner dividing points in American records geography.

For researchers building a systematic approach, the Genealogical Proof Standard and Research Planning and Organization pages offer the methodological framework that makes NARA visits — physical or digital — actually productive. A broader orientation to American genealogical resources starts at the main genealogy resource index.

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