State of Maryland (opendata.maryland.gov) publishes 1,538 open datasets for United States. Browse them live in Vizzie and turn any one into a map or chart.
State of Maryland (opendata.maryland.gov) is the open-data portal for United States, covering Maryland. It runs on Socrata, Tyler Technologies' open-data platform. You can browse it directly at opendata.maryland.gov.
On State of Maryland (opendata.maryland.gov), a majority of datasets here declare no licence at all. 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.
Only 29% of datasets on State of Maryland (opendata.maryland.gov) name a publisher, so this covers that part of the catalogue rather than all of it.
No download, no GIS specialist. Opens in Vizzie.