About King County open data

The King County Open Data Project is an ongoing effort to release high-value, machine readable data sets to the public. The data sets currently available come from many areas of county government. Ongoing efforts to expand the data are in progress.

Use the Request a new dataset form if there are additional datasets you'd like us to add to the the site.

Want to learn more about how to use what's available here? Watch these how-to videos to see short demos of the data tools we offer, how they work, and what you can do with them.