Datasets
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Personal Property Data
Personal property typically includes items used by a company to conduct business. Generally, personal property does not include property which is attached to a building or to... -
Water Quality
Prior to downloading data, please download the README file. This dataset contains water quality samples collected from Puget Sound, lakes, and streams in the region which can be... -
Freshwater CTD data
Profiles of temperature, conductivity, salinity, dissolved oxygen, chlorophyll fluorescence, beam transmission, and surface and subsurface PAR collected monthly to twice monthly... -
Freshwater Swim Beach Data
This data represents the results of the King County Swim Beach program. These data are generally available from mid-May to late September during the swim beach monitoring... -
Food Establishment Inspection Data
Health Department inspection results for food service establishments in King County, 2006 to the present. This data is organized by Business / Inspection Date / Violation. Each... -
Real Property Tax Receivables
Please refer to the Real Property Tax Receivable Attributes Descriptions file for explanation. -
EGP Nonprofits
List of nonprofits in the King County Employee Giving Program Annual Drive -
KCSO Offense Reports: 2020 to Present
The King County Sheriff’s Office (KCSO) is providing offense report data captured in it's Records Management System (RMS) from 2020 to present. KCSO replaced its RMS in late... -
ICS Classes for Emergency Management Professionals
A schedule of training classes and exercises for emergency management professionals to learn FEMA's Incident Command System (ICS). https://kingcounty.gov/depts/emergency-... -
Penn Cove Entrance Buoy Raw Data Output - Surface
This is a raw and uncorrected dataset from the surface buoy at the entrance to Penn Cove. This data has not been reviewed or corrected in any manner. It should be used with... -
Adult Jail Booking Sep 1, 2024 to Aug 31, 2025 as of Sep 2, 2025
The Jail Bookings Open Data dataset is provided by the King County Department of Adult and Juvenile Detention. The dataset contains adult jail bookings which have occurred... -
Lake Washington Ship Canal outflow
Daily average and 7-day trailing mean discharge through the Lake Washington Ship Canal's Ballard Locks -
WQS_ExcursionDataset
This dataset consists of stream water quality data from the King County Ambient Stream Monitoring program. The data are evaluated based on the water quality standards assigned... -
Lake Washington water surface elevation
Daily mean elevation derived from hourly average data obtained from Army Corps of Engineers dataquery 2.0 -
August 2025 Primary Election - Final Precinct Results
Final precinct level results for the August 5, 2025 Primary & Special Election. -
King County Mental Health and Substance Use-Disorder Providers
All KC contracted mental health and substance use providers https://kingcounty.gov/depts/community-human-services/mental-health-substance-abuse/services/providers.aspx -
August 2025 Primary Election - Mid Election Precinct Results
Mid-election precinct level results for the August 5, 2025 Primary Election in King County, WA.