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State Boundary

Published by opendata.maryland.gov | State of Maryland | Catalog Last Checked: June 09, 2026 at 06:31 PM | Dataset Last Updated: June 09, 2026
The Maryland county boundaries were built using the USGS Topo Quads, county boundaries from the county governments, monument points, and historic records from the Maryland Archive. This layer has been dissolved from the County Boundaries layer.

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