Montgomery County (MD) Police
From The RadioReference Wiki
County Police
Montgomery County Police is the primary law enforcement agency in Montgomery County, MD.
MCPD is divided into 6 different districts. More information on districts can be found through these links.
https://www.montgomerycountymd.gov/pol/districts.html
https://www.montgomerycountymd.gov/pol/districts/find-my-district.html
More information about specifics on Montgomery County Police can be found here..
https://www.ericcarlson.net/scanner/police.html
Some of the information on this link above is outdated. But, The Beat and unit designations remain similar.