City of Seattle publishes 146 open datasets for United States. Browse them live in Vizzie and turn any one into a map or chart.
City of Seattle is the open-data portal for United States, covering Washington. It runs on Socrata, Tyler Technologies' open-data platform. You can browse it directly at data.seattle.gov.
On City of Seattle, most datasets here are clearly licensed — only a small share are undeclared. It's important to know that "no licence declared" is not the same as public-domain or free-to-use. Undeclared data carries no explicit permission to copy, adapt, or redistribute it — so reusers should treat it cautiously and check with the publisher before relying on it. Vizzie flags each dataset's licence (or its absence) so you can see this before you build.
No download, no GIS specialist. Opens in Vizzie.