There are 290 county subdivisions in Maryland known as minor civil divisions (MCDs). All of the MCDs are nonfunctioning nongovernmental subdivisions of a county, used for conducting elections or recording properties. The 289 MCDs in 23 counties in Maryland are election districts. Baltimore city is independent of any MCD and serves as a county subdivision.
Subdivisions that are also Incorporated Places have an asterisk(*) and the link takes you to the Community Profile for the Incorporated Place.