What Does USC Stand For in Law? Citations, Structure, and CFR

In a legal context, USC stands for the United States Code, the official compilation of federal statutes organized by subject.¹ It gathers the general and permanent laws Congress has passed into 54 topic-based groupings called titles, so anyone can look up an area of federal law without digging through decades of individual bills. The Office of the Law Revision Counsel of the U.S. House of Representatives prepares and maintains it.²

You’ll usually see it written as “U.S.C.” with periods, though “USC” without them is common in casual writing.

How the Code Is Organized

The Code splits federal statutory law into 54 titles, each covering a subject area. Title 1 addresses General Provisions. Title 18 covers Crimes and Criminal Procedure. Title 26 is the Internal Revenue Code. Title 28 handles the Judiciary and Judicial Procedure.¹ The subject arrangement means you go straight to the title that matches your topic rather than reading bills in the order Congress passed them.

Inside a title, the text breaks down into subtitles, chapters, subchapters, parts, and sections. The section is the basic building block, and it holds the actual language of a specific legal rule.¹ When someone refers to a section of federal law, they mean one of these numbered provisions.

Not everything the federal government produces goes into the Code. Treaties, agency regulations, temporary spending bills, and laws that apply only to a specific place or a small group of people are left out.¹ Only general and permanent laws are codified.

How to Read a USC Citation

A citation to the United States Code follows a simple pattern: a title number, the abbreviation “U.S.C.,” the section symbol (§), and a section number. Nothing is italicized, and no punctuation separates the parts.

For example, 18 U.S.C. § 1341 tells you to look in Title 18 (Crimes and Criminal Procedure), Section 1341. That section is the federal mail fraud statute, which carries a fine and up to 20 years in prison, or up to 30 years and a fine of up to $1,000,000 if the offense involves a financial institution or a presidentially declared disaster.³

Subsections, Paragraphs, and Clauses

Many sections contain layers of detail labeled with letters and numbers in parentheses. A citation like 42 U.S.C. § 405(c)(2)(C)(ii) points to a very specific clause nested inside Section 405 of Title 42. The parenthetical chain works from broadest to narrowest: subsection (c), paragraph (2), subparagraph (C), clause (ii). Each character in the string narrows the focus further.

Date Indicators

A citation sometimes ends with a year in parentheses, such as 42 U.S.C. § 402(k) (2025). The year tells you which edition of the Code the writer relied on, which matters when a section has been recently amended or repealed. No date means the writer is citing the current version.

When the Code Itself Is the Law, and When It Isn’t

Not every title in the Code carries the same legal weight. Under 1 U.S.C. § 204(a), titles that Congress has formally enacted into “positive law” are treated as legal evidence of the statutes they contain, meaning a court can rely on the Code text itself as proof of what the law says.⁴ For the remaining titles, the Code text is only “prima facie” evidence, a presumption of accuracy that can be overridden if the original Statutes at Large says something different.

As of early 2026, 30 of the 54 titles have been enacted into positive law, including Title 10 (Armed Forces), Title 11 (Bankruptcy), Title 18 (Crimes and Criminal Procedure), Title 26 (Internal Revenue Code), and Title 35 (Patents).⁵ For the other 24 titles, if you find a discrepancy between the Code and the Statutes at Large, the Statutes at Large controls.

USC vs. CFR

The United States Code and the Code of Federal Regulations (CFR) are two separate publications that work together. The USC contains statutes: laws Congress passed and the President signed. The CFR contains regulations: detailed rules federal agencies write to carry out those statutes.¹ Agency regulations are excluded from the USC.

A statute often gives an agency broad authority to act, and the agency then fills in the details through regulations published in the CFR. A section of the USC might direct an agency to establish safety standards for an industry, while the CFR would contain the specific measurements, deadlines, and reporting requirements the agency wrote to enforce that mandate. When researching federal law, you may need both: the USC for the underlying authority and the CFR for the implementing rules.

Where to Read the Code

Several free, publicly available platforms host the full text:

Office of the Law Revision Counsel (uscode.house.gov) is the primary source. The online version uses the same database from which the Government Publishing Office prints official volumes.⁶
GovInfo (govinfo.gov), operated by the Government Publishing Office, provides the Code in a format used for official legal verification.⁷
The Legal Information Institute at Cornell Law School (law.cornell.edu) offers a reader-friendly interface for browsing titles and sections.

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Office of the Law Revision Counsel. Detailed Guide to the United States Code Content and Features
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Office of the Law Revision Counsel. United States Code – Search and Browse
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Office of the Law Revision Counsel. 18 USC 1341 Frauds and Swindles
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Office of the Law Revision Counsel. 1 USC 204 Codes and Supplements as Evidence of the Laws of the United States
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Office of the Law Revision Counsel. Download the United States Code
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Office of the Law Revision Counsel. About the United States Code and This Website
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GovInfo. United States Code