Federal Sentencing Guides
Plain-language explainers on how federal sentencing works, what the data means, and how to use PlainSentencing for research.
What the data actually splits
According to the U.S. Sentencing Commission FY2025 Individual Offender Datafiles, Western Texas District is #1 of 93 by FY2025 caseload (10,416 cases) at average-sentence rank 85 of 88 districts with at least 100 cases (21.2 months) ≠ Southern Iowa District #1 longest average at 129.3 months (caseload #57).
- 10,416
- Western Texas District cases (#1 caseload)
- 129.3 months
- Southern Iowa District avg (#1 longest)
- #85
- Western Texas District average-sentence rank
- #57
- Southern Iowa District caseload rank
Caseload rank covers every district with at least one FY case. Average-sentence rank covers districts with at least 100 cases so a thin docket cannot top the list. Offense ranks cover the 30 published guideline types. Averages follow offense mix, not court character.
Guide catalog by purpose
Exclusive purpose mix across all 9 published guides. Segments sum to the catalog, not the caseload dual above.
How Federal Sentencing Works: Guidelines, Departures, and Judicial Discretion
Understand the federal sentencing process from guilty plea through sentencing hearing. How judges use the guidelines, when they depart, and what factors affect sentence length.
Understanding Federal Sentencing Guidelines
A plain-language guide to how the USSC guidelines work, offense levels, criminal history categories, the sentencing table, and how they translate into months of imprisonment.
Mandatory Minimum Sentences: What They Are and How They Work
How mandatory minimum sentences override judicial discretion, which offenses carry them, and the safety valve provisions that allow exceptions.
Sentencing Disparities Across Federal Districts
Why the same offense can result in very different sentences depending on where it is prosecuted. What PlainSentencing data reveals about geographic variation.
United States v. Booker and Its Aftermath
How the 2005 Supreme Court decision made the federal sentencing guidelines advisory rather than mandatory, and what changed in sentencing patterns afterward.
Plea Bargaining in Federal Court
Over 97% of federal cases end in guilty pleas. How plea bargaining works, what defendants give up, and how it shapes the sentencing data on PlainSentencing.
How to Read Sentencing Data on PlainSentencing
A practical guide to interpreting district profiles, offense breakdowns, guideline compliance rates, and disparity scores on PlainSentencing.
Recent Sentencing Guideline Amendments: Amendment 821 Explained
The 2023 retroactive reductions for "status points" and zero-point offenders, in plain language, what changed, who it reaches, and what it does not do.
How Much of a Federal Sentence Is Actually Served? Good Conduct Time and Early Release
How much of a federal prison sentence is actually served: good conduct time (about 15%), First Step Act earned time credits, supervised release, and why there is no federal parole.
Methodology
Every guide on PlainSentencing is written against the primary source, the U.S. Sentencing Commission's Individual Offender Datafiles, FY2015 through the latest available fiscal year. We do not aggregate second-hand reports; we compute directly from the raw case-level records the USSC releases under its public-domain license.
Within-guidelines rates, above/below departure shares, disparity scores, and district rankings are derived from the same case-level fields. Disparity is computed as the percentage difference between a district's average imposed sentence and the national benchmark for the same offense mix, after aligning on offense_guideline and fiscal_year. Districts and offenses with fewer than 5 cases for a given metric are excluded for statistical reliability.
Guides draw on black-letter sources where appropriate - United States v. Booker (2005) for the advisory-guidelines framework, 18 U.S.C. § 3553(a) for the sentencing factors, and the USSC Guidelines Manual for offense levels, criminal history categories, and departures. For policy context (mandatory minimums, safety valve, First Step Act), we cite the originating statutes and legislative record rather than secondary commentary.
Read the full methodology at our methodology page, or start with How to Read Sentencing Data on PlainSentencing.
Download the federal sentencing-by-district CSV cited on this page: plainsentencing-districts.csv (CC0).