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City dataPublic Safety
SPD Arrest Data
Published by SPD · Updated 10/29/2026 · Daily
- Last updated
- 10/29/2026
- First published 04/23/2026
- Update frequency
- Daily
- Formats
- 3
- CSV, JSON, XML
- Coverage
- Seattle
- City in Washington
About this dataset
Under the current business process, every seizure (4th Amendment of the US Constitution) conducted under the evidentiary standard of Probable Cause (PC) is documented in the RMS (Mark43). In addition to physical arrests made by officers, the system is configured to capture warrants, and summons arrests (where the officer is affecting a PC seizure on the authority of someone else (the court) and administrative arrest types that document updates to the identity of the subject who was arrested and additional charges. In total, 12 types of arrest are captured in the source.
Note: This data set includes counts of arrest reports written which are distinct from physical, in-custody events. All counts herein reflect either total counts of arrest reports by the selected filter parameters, and/or the total number of reports written per subject.
Files and access
Links open the official government source
- CSV downloaddata.seattle.govCSV
- JSON (SODA API)data.seattle.govJSON
- XMLdata.seattle.govXML
API endpoint: https://data.seattle.gov/resource/9bjs-7a7w.json
Links open outside websites we do not control.
Frequently asked questions
- Who publishes SPD Arrest Data?
- SPD, part of City of Seattle, publishes this dataset on Seattle Open Data.
- How often is it updated?
- The publisher lists the update frequency as daily. The last update was on 10/29/2026.
- How do I download it?
- It is available as CSV, JSON, XML. Use the links in Files and access, which open the official government source.
Similar data from other publishers
- Arrest DataDepartment of Justice · Bureau of Justice StatisticsThe underlying data are from the FBI's Uniform Crime Reporting (UCR) Program. BJS has expanded upon the FBI's estimates to provide national arrest estimates detailed by offense, sex, age, and race.Updated 01/01/2013
- NYPD Arrest Data (Year to Date)City of New York · Police Department (NYPD)This is a breakdown of every arrest effected in NYC by the NYPD during the current year. This data is manually extracted every quarter and reviewed by the Office of Management Analysis and Planning. Each record represents an arrest effected in NYC by the NYPD CSVJSONGeoJSONXMLUpdated 07/27/2026Quarterly
- NYPD Arrests Data (Historic)City of New York · Police Department (NYPD)List of every arrest in NYC going back to 2006 through the end of the previous calendar year. This is a breakdown of every arrest effected in NYC by the NYPD going back to 2006 through the end of the previous calendar year. This data is manually extracted everCSVJSONGeoJSONXMLUpdated 04/28/2026Yearly
- Arrest Data from 2010 to 2019City of Los Angeles · Los Angeles Police Department******Notice: Transition to NIBRS-Compliant Arrest Data Reporting The Los Angeles Police Department (LAPD) has completed its transition from the legacy Records Management System, which reported crime and arrest data under Uniform Crime Reporting (UCR) standardCSVJSONGeoJSONXMLUpdated 06/03/2025Irregularly
- Daily ArrestsMontgomery County, Maryland · Montgomery County, MDThis dataset provides the public with arrest information from the Montgomery County Central Processing Unit (CPU) systems. The data presented is derived from every booking; criminal, civil and motor vehicle entered through CPU. The data is compiled by “CRIMS”,CSVJSONXMLUpdated 10/30/2026Daily
Where this catalog comes from
- Data.gov CatalogU.S. General Services Administration
- State and local open data portalsSocrata Discovery API
- State and city CKAN portalsCalifornia, Virginia, Boston, Houston and more
- Government ArcGIS Hub sitesCity and county GIS data
Catalog checked 10/30/2026
We list dataset descriptions only. Downloads and APIs link straight to the official government source, which holds the current version and its terms of use.
Source: Seattle Open Data · Last updated 10/30/2026 · Listing only; the data stays with the publisher
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