County data explorer
Maryland county data and maps
Explore available county datasets, rankings and source notes.
Published topics
Rankings
Rankings describe published ACS estimates; follow each link for vintage and limitations.
Find a county
Links open county overviews where available and otherwise existing housing pages. The full alphabetical list works without JavaScript.
- Allegany County GEOID 24001
- Anne Arundel County GEOID 24003
- Baltimore city GEOID 24510
- Baltimore County GEOID 24005
- Calvert County GEOID 24009
- Caroline County GEOID 24011
- Carroll County GEOID 24013
- Cecil County GEOID 24015
- Charles County GEOID 24017
- Dorchester County GEOID 24019
- Frederick County GEOID 24021
- Garrett County GEOID 24023
- Harford County GEOID 24025
- Howard County GEOID 24027
- Kent County GEOID 24029
- Montgomery County GEOID 24031
- Prince George's County GEOID 24033
- Queen Anne's County GEOID 24035
- Somerset County GEOID 24039
- St. Mary's County GEOID 24037
- Talbot County GEOID 24041
- Washington County GEOID 24043
- Wicomico County GEOID 24045
- Worcester County GEOID 24047
Sources and limitations
Topic pages identify their sources, vintages, downloads and limitations. ACS estimates include survey uncertainty; crime counts are not population-normalized and do not establish safety or risk. PEP and ACS are distinct population series.