Holiday closure Monday May 28: Most county offices will be closed in observance of Memorial Day.

Developer resources

Welcome, developers!

Thank you for creating applications and mash-ups using King County Metro Transit data. We're working to expand our resources and make them easier to use.

General Transit Feed Specification (GTFS)

Our data is available in the General Transit Feed Specification (GTFS). This dataset includes all King County Metro bus, Seattle Streetcar and King County Water Taxi service as well as Sound Transit Link light rail service and some but not all Sound Transit Express Regional bus service. This data defines King County Metro Transit service and includes but is not limited to schedule and associated geographic data.
» More about GTFS on Google Code [external link]
» Metro Transit Data Q & A
To access Metro's feed, you must first read and agree to the King County Transit Data Terms of Use.

RSS feeds

We now offer Metro Transit alerts in RSS format, and we are working to add more feeds.
» Metro Transit RSS feeds

Contact us

Have questions about our data?
» E-mail us

Sign up

We want to make sure you know what we’re doing. Sign up to get updates about data changes, new resources, workshops and events.
» Sign up for e-mail or texts 
» Subscribe to the RSS feed

Promote your app

Did you build something cool with our data?  Want to tell the world?
If your app:
1. uses our data and
2. works
we'll link to it from our Apps Center.
Just e-mail us a link and brief description.