Data · dataset · 2025
County Boundaries
Listed in Maryland Open Data Portal
Polygon features which represent the political boundary of each county in the State of Maryland.
Description
The Maryland Political County Boundaries were developed using USGS Topo Quads, boundaries submitted by each Maryland county, monument points, and historic records from the Maryland Archive. This data is used by various modules throughout the Maryland Department of Transportation (MDOT), as well as many other State and local government agencies for purposes such as planning, land use, transportation, data & asset collection, and cartographic product development.
This data is updated and published on an annual (yearly) basis for the prior year. This data is for the year 2015. For additional information, contact the MDOT SHA Geospatial Technologies Team: GIS@sha.state.md.us
Links
Get the data
- CSV opendata.maryland.gov/api/views/y8c4-8fr3/rows.csv?accessType=DOWNLOAD ↗
download · from opendata maryland gov
Where it is published
- Maryland Open Data Portal dataset page opendata.maryland.gov/dataset/County-Boundaries/y8c4-8fr3 ↗
landing page · from opendata maryland gov
Catalogue records · 1
- SODA API opendata.maryland.gov/resource/y8c4-8fr3.json ↗
metadata API · from opendata maryland gov
Topics
- From keywords
- Social Science
- Inferred from text
- Human geography 71%
Provenance · 1 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| Maryland Open Data Portal | y8c4-8fr3 | 13 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · opendata maryland gov | connector:opendata_maryland_gov@1.0.0 | |
| concepts[field].anzsrc:group:4406 | enrichment · opendata maryland gov | taxonomy-embedding@1.1.0 | title+keywords+description (71%) |
| concepts[field].local:field:social-science | mapping · opendata maryland gov | connector:opendata_maryland_gov@1.0.0 | |
| created_date | source · opendata maryland gov | connector:opendata_maryland_gov@1.0.0 | |
| description | source · opendata maryland gov | connector:opendata_maryland_gov@1.0.0 | /resource/description |
| publication_date | source · opendata maryland gov | connector:opendata_maryland_gov@1.0.0 | |
| title | source · opendata maryland gov | connector:opendata_maryland_gov@1.0.0 | /resource/name |
| updated_date | source · opendata maryland gov | connector:opendata_maryland_gov@1.0.0 |