County Boundaries (Maryland)
Outlines of Maryland's counties, taken from the state political layers.
Maryland city and county data hubs
Public pages for 34 places: 24 counties and 10 cities. Each page has the place name and an official portal when one is known. Holdings have not been inventoried.
- Places34
- Counties24
- Cities10
- Statewide datasets4
Maryland-specific datasets
4MTA Bus Lines (Maryland)
MTA bus routes across Maryland from the state transit map layers.
Maryland Parcel Polygons (MDP)
Statewide land parcels linked to assessment records, for reference rather than survey.
Cities
10- Rockville68,417 residents
- Bowie58,421 residents
- Hagerstown43,909 residents
- Annapolis40,689 residents
- College Park34,667 residents
- Salisbury33,616 residents
- Laurel30,238 residents
Counties
24- Anne Arundel County602,350 residents
- Baltimore city568,271 residents
- Howard County339,668 residents
- Frederick County299,317 residents
- Harford County265,514 residents
- Carroll County177,108 residents
- Charles County174,478 residents
- Washington County157,228 residents
- St. Mary's County116,469 residents
- Wicomico County106,329 residents
- Cecil County106,305 residents
- Calvert County94,913 residents
- Allegany County67,097 residents
- Worcester County54,337 residents
- Queen Anne's County53,688 residents
- Talbot County38,244 residents
- Caroline County34,248 residents
- Dorchester County33,138 residents
- Garrett County28,393 residents
- Somerset County25,241 residents
- Kent County19,557 residents