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
Paper jam tastes about as you would expect. Try some on this tiny ad:
montana community seeking 20 people who are gardeners or want to be gardeners