There doesn't seem to be a lot of intentional community activity outside of Heathcote and Baltimore Free Farm.
There are others I'm sure.
What are you working on, anywhere in Maryland?
Seeking community in Maryland:
https://permies.com/t/91083/WWOOF-organic-farm-volunteers-interns/experiences/Seeking-family-friendly-communities-Maryland
Listen. That's my theme music. That's how I know I'm a super hero. That, and this tiny ad told me:
Your suggestions have been mashed into the PIE page - wuddyathink?