The Centers for Disease Control Social Vulnerability Index shows which communities are especially at risk during public health emergencies because of factors like socioeconomic...

The KC-Clerk's public portal provides King County Superior Court case number and participant name search functionality and access to case information. Accessible cases include...

Animal shelter data

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...

Parcel Viewer makes searching for King County parcel information easy. You can search by address, search by parcel number, or you can just zoom in on the map and click on a...

Search for King County property data by parcel number

This web map displays data from the voter registration database as the percent of registered voters by census tract in King County, Washington. The data for this web map is...

Election night precinct level results for the February 10 2026 Special Election.

Search for and view case information on King County District Court (KCDC) Civil cases (excludes Small Claims, Name Changes, Impounds and Protection Orders). Users can also...

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...

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...

Most documents recorded on or after August 1, 1991 are available online. Documents that were recorded prior to August 1, 1991 are on microfilm and are only available from the...

Updated every Thursday People experiencing homelessness are at risk for infection through community spread of COVID-19. The data below describes impacts of COVID-19 on...

King County GIS data is at: https://gis-kingcounty.opendata.arcgis.com/ (new KCGIS Open Data site) OR http://www5.kingcounty.gov/gisdataportal/ (legacy KCGIS data FTP download...

Mid-election precinct level results for the February 10, 2026 Special Election

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...

Daily mean elevation derived from hourly average data obtained from Army Corps of Engineers dataquery 2.0

This dataset contains WQI scores (parameter-specific, monthly, and annual scores) for water quality monitoirng data collected through the County’s ambient stream water quality...

This data set consists of all data from the following King County publication: Chelsea Mitchell. 2025. Testing Removal of 6PPDQ and Coho Salmon Lethality by High-performance...

Patrol districts for the King County Sheriff's Department