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IDOC incarcerated population

The number of people incarcerated under the Idaho Department of Correction as of June 30 each year, by facility type and by legal status.

Figures

Total incarcerated population, fiscal year 2019 to fiscal year 2026Total incarcerated population, fiscal year 2019 to fiscal year 2026. Idaho: 9,027 in fiscal year 2019, 9,950 in fiscal year 2026.05,00010k20202025IdahoCountTotal incarcerated population, fiscal year 2019 to fiscal year 2026Total incarcerated population, fiscal year 2019 to fiscal year 2026. Idaho: 9,027 in fiscal year 2019, 9,950 in fiscal year 2026.05,00010k2020202220242026IdahoCountTotal incarcerated population, fiscal year 2019 to fiscal year 2026Total incarcerated population, fiscal year 2019 to fiscal year 2026. Idaho: 9,027 in fiscal year 2019, 9,950 in fiscal year 2026.05,00010k2020202220242026IdahoCount

Source: Idaho Department of Correction, Incarcerated Population Report. Data period fiscal year 2026.

MeasureValuePeriod
Total incarcerated populationfiscal year 20269,950fiscal year 2026

Pages built on this dataset

Publisher

Organization
Idaho Department of Correction
Publisher’s dataset
Incarcerated Population Report
File or API used
https://www.idoc.idaho.gov/content/document/fy_2026_incarcerated_population_report

Coverage

Geography
Idaho, statewide
Time coverage
FY2019-FY2026 (FY2021 and FY2022 have no total population figure; see caveats)
Update frequency
Annual. IDOC publishes the report for a fiscal year after it ends June 30.
Retrieved
October 12, 2026
License of the records
Public domain. Idaho state government work.
Rows
62 observations, 2019-2026

Measures

MeasureWhat it measuresUnit
Total incarcerated populationTotal number of people incarcerated under the Idaho Department of Correction on June 30.count
Incarcerated population by facility typePeople incarcerated under the Idaho Department of Correction on June 30, by type of facility.count
Incarcerated population by legal statusPeople incarcerated under the Idaho Department of Correction on June 30, by legal status.count

Caveats

  • This is a point in time count as of June 30 each year, not an average daily population or a count of admissions during the year.
  • The count includes people IDOC holds in county jails and in a contracted out of state facility in Arizona, so it is not a count of people held inside Idaho's own state prisons alone.
  • IDOC's reports also break the incarcerated population down by crime group, age and gender, but those figures print only as percentage labels on a chart image with no adjoining table, so they are not in this dataset.
  • Facility type and legal status are two different breakdowns of the same population, and each one's categories sum to the total incarcerated population for its fiscal year.
  • A rider is a person sentenced to a period of incarceration over whom the court has retained jurisdiction while IDOC assesses them for programming, after which the court decides whether to place them on probation or impose the full term.
  • A parole violator is a person who violated the conditions of parole and is held in this status until a hearing decides whether parole is reinstated or revoked.
  • IDOC's own reports label the prison category Institutions through the FY2020 report and Prisons from the FY2021 report on, and label the contracted out of state category Contract Beds through the FY2022 report and Out of State Beds from the FY2023 report on, for the same figures; this dataset uses the later names for every year.
  • From the FY2026 report on, IDOC prints one row per facility instead of four category rows. The facility types here sum those rows: prisons are the in-state prisons, reentry centers the community reentry centers, out of state beds the Florence and Saguaro contract facilities, and county jails the County Jails row plus the named Adams, Bonneville and Jefferson county jails. The FY2025 figures computed this way match the FY2025 report's own category rows.
  • IDOC's FY2022 report moved people from the prison total to the reentry center total for fiscal year 2021 compared with the FY2021 report's own figures for that year; the total for that year did not change, and the newer report's breakdown is stored here.
  • IDOC's FY2021 and FY2022 reports do not print their fiscal year's total incarcerated population in a table or as a chart value, so neither year carries a total here; the FY2021 report states one inside a narrative sentence, and that figure disagrees with its own tables.

Where sources disagree

  • Total incarcerated population, Idaho, FY2021: the narrative text of IDOC's own FY2021 report publishes 8,515. IDOC's FY2021 report states in a sentence that the population fell 2.9% in the fiscal year, from 8,775 to 8,515. The same report's Facility Type table and its status totals for June 30, 2021 each sum to 8,518, and the FY2022 report restates the facility rows without changing that sum. This dataset carries no total for FY2021, because IDOC prints one only in that sentence and it does not agree with the tables the rest of this dataset is read from.
  • Total incarcerated population, Idaho, FY2023: the Bureau of Justice Statistics, National Prisoner Statistics publishes 9,829. IDOC counts 9,332 people incarcerated on June 30, 2023. The Bureau of Justice Statistics counts 9,829 under Idaho's jurisdiction on December 31, 2023. The two are six months apart in a period when the population was rising, and they count different things: IDOC's figure is who it holds, in state prisons, reentry centers, county jails and a contracted Arizona facility, while the Bureau's is who Idaho is legally responsible for wherever they are held. Both are correct for what each measures.

How to cite

Understand Idaho, “Incarcerated Population Report”, compiled from Idaho Department of Correction, Incarcerated Population Report. Retrieved October 12, 2026. https://understandidaho.com/data/idoc-incarcerated-population/.

Cite Idaho Department of Correction directly for the figures themselves.

This page was last updated .