Data · dataset · 2025
Municipal Boundaries - Detailed
Listed in Maryland Open Data Portal
State of Maryland municipality boundary dataset.Maryland Department of Planning (MDP) maps annexations from municipalities.
Description
This dataset is created and maintained by the Maryland Department of Planning. These boundaries are not intended to serve as a legal description.
Fields:MUN_NAME (Municipality Name): Name of Municipality located in Maryland.RESOLUTION_NUMBER (Resolution Number): Local Municipality Annexation Resolution Number.ANNEXATION_DATE (Annexation Date) (DD/MM/YYYY): The Annexation Date field shows when there's been a change in the boundary. This date is known as the “Effective Date” from the municipality. The date 1/1/1997 is used as a default date of when annexation changes were first indicated in the GIS layer and not necessarily of when it was actually annexed.
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If there's a date of 1/1/1997, it can be assumed that the annexation occurred on this date or before. For example, for Baltimore City, the city boundary was determined hundreds of years ago. Other than that default date, the date will show when the property was annexed.
MUN_CODE (Municipality Code): MUN = within Priority Funding Area (PFA); MUNCOM = PFA with comment; MUN_NONPFA = not in PFAACRES (GIS Acres): GIS calculated acresJURSCODE (Jurisdiction Code) – Four letter county code: ALLE (Allegany), ANNE (Anne Arundel), BACI (Baltimore City), BACO (Baltimore County), CALV (Calvert), CARO (Caroline), CARR (Carroll), CECI (Cecil), CHAR (Charles), DORC (Dorchester), FRED (Frederick), GARR (Garrett), HARF (Harford), HOWA (Howard), KENT (Kent), MONT (Montgomery), PRIN (Prince George’s) QUEE (Queen Anne’s), SOME (Somerset), STMA (St.
Mary’s), TALB (Talbot), WASH (Washington), WICO (Wicomico), WORC (Worcester).
Links
Get the data
- CSV opendata.maryland.gov/api/views/spg7-yese/rows.csv?accessType=DOWNLOAD ↗
download · from opendata maryland gov
Where it is published
- Maryland Open Data Portal dataset page opendata.maryland.gov/dataset/Municipal-Boundaries-Detailed/spg7-yese ↗
landing page · from opendata maryland gov
Catalogue records · 1
- SODA API opendata.maryland.gov/resource/spg7-yese.json ↗
metadata API · from opendata maryland gov
Topics
- From keywords
- Social Science
Provenance · 1 source records, 7 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| Maryland Open Data Portal | spg7-yese | 12 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · opendata maryland gov | connector:opendata_maryland_gov@1.0.0 | |
| 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 |