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Population information - Adult and Juvenile Detention

Find reports and data about who is in custody in King County jails, detention centers, and alternative programs.

Statistical reports

The Department of Adult and Juvenile Detention creates monthly and annual population reports. These reports cover adult and youth detention as well as alternatives to secure detention. 

For records prior to 2018, contact Records.DAJD@kingcounty.gov.

 

2024

Detention and Alternatives Report (through January)

 

2023


Detention and Alternatives Report

 

2022

Detention and Alternatives Report 

 

2021

Detention and Alternatives Report

Scorecard

Pre-Sentence Felons by Most Serious Offense 

Demographic Breakdown

  

2020

Detention and Alternatives Report

Scorecard

Demographic Breakdown


2019

Detention and Alternatives Report

Scorecard

Demographic Breakdown


2018

Detention and Alternatives Report

Scorecard

Demographic Breakdown

Open datasets

The Jail Bookings Open Data dataset contains information about adult bookings into King County jails within the last 12 months. 

The dataset does not provide information about a court cause, case, or criminal filing. The information does not reflect the criminal history or criminal status of any adult currently or previously in custody.

It's important to note that updates, corrections, and additions to a person's booking information are possible since the original extraction date and time. 

For more information about a specific booking event, do the following:

Types of statistical reports

 

Detention and Alternative Reports (DAR)

This is a statistical report of data on the adult secure detention populations at the following:

  • Seattle Division (King County Correctional Facility)
  • Kent Division (Maleng Regional Justice Center)
  • Community Corrections Division (adult alternatives to secure detention)
  • Juvenile Division (The Judge Patricia H. Clark Children and Family Justice Center)

 

Scorecard

A year-end summary of DAR.

 

Pre-Sentence Felons by Most Serious Offense

Report on the adult pre-sentence felon population. The report is in order of most serious offenses. The report sites monthly counts and 3-month rolling averages for this population. It also provides measures of Average Daily Population (ADP) and Average Length of Stay (ALOS). 

 

Demographic Breakdown

This two-page report sites data on the following:

  • Average Daily Population (ADP) by housing location: secure detention, work release, electronic home detention
  • Demographics: age, race, gender
  • Bookings demographics: persons admitted to the facility during the month
  • Unique Persons Incarcerated demographics: all persons in custody that month

Adult jail population

Find up-to-date information on population characteristics, demographics, and more about adults in custody in King County. This includes adults in secure detention at the King County Correctional Facility in Seattle and the Maleng Regional Justice Center in Kent, as well as those in the Electronic Home Detention program. 

Population Dashboard

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