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Free Legal Research Resources - United States


How to use this guide

This guide contains selected free online legal research resources related to United States federal and state materials. These resources can be a great way to get started with your research when you don't have access to paid databases or if you want to get an overview of a topic before getting started with potentially expensive searches.  Legal research is often more effective when using a local law library.  To learn more about law libraries throughout the United States, visit:

Federal Law & Gov't Docs

Range of Materials

The Constitution

Statutes and Legislative Materials

Many statutes and legislative materials are available for free online and this is only increasing over time. While you should always be careful to ensure that you confirm your findings with an authoritative version of the law, free resources can be a great starting place for statutory research.

Supreme Court

Case Law and Court Documents

Federal case law and court documents are often available online for free, particularly if the case was decided recently. Generally, check the website of the deciding court to see if they provide digital copies of their cases. In addition, the following resources provide free case law.

Case Validation

While case searching and retrieval through free databases is increasingly achievable, paid services are still most often used to ensure that cases have not been overruled or negatively impacted by later case law.  Tools that facilitate this case validation process are called citators.  At present, the best way to access citators for free, is mediated through state and local public law libraries.  To find a state or local law library visit:

Executive Documents

State Law

State Statutes and Regulations

Many states and localities publish some or all of their legislative materials on their website, so your first stop this type of research should generally be the website of the the state or locality in question. Remember, even if these materials are on official government websites, that does not mean that these are official copies of the materials in question.  The National Conference of State Legislators provides a list of State Legislative Websites.

The sources below provide alternatives for hard-to-find state materials.

State Case Law and Court Documents

Courts are increasingly making their materials freely available online, frequently via the court website. At the state level, this is particularly true for state Supreme Courts. When looking for state case law, it is often best to start at the website of the deciding court if you have a citation.  The National Center for State Courts provides a list of state court websites.

The sources below provide alternatives for hard-to-find cases.


U.S. Treaties

Several government-sponsored websites provide the full-text of U.S. treaties on the web. Refer to the list below for date ranges for each sources.

Foreign & International Law

For free resources on foreign and international law, please see our foreign and international law guide:

Secondary Sources

Journal Search & Legal Opinions - Google Scholar

Google Scholar offers access to many legal documents including patents, legal opinions and journals. Use the search box below and select the appropriate options from the dropdown menu at the top left of your screen.

Google Scholar Search


While many journals are only available on paid databases, open access journals and other freely avaiablle articles are increasingly available. The following sources collect freely available journal articles.

Books, Dictionaries, Encyclopedias, Treatises, Dissertations, Etc.

Secondary sources are also increasingly available online for free. 

Data Sources

Federal Data Sources

Many government data sources are made available to the public for free online. Check the websites of any relevant agencies or organizations to see if you can find additional data beyond that found in the databases below.

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CC License

CC License

Creative Commons License

This guide is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 United States License.

You may reproduce any part of it for noncommercial purposes as long as credit is included and it is shared in the same manner.