Can I be a Maryland Notary if I live in DC?

Notary Public DC
It is very common for Maryland residents to have a Washington DC Notary Public commission and be a Notary Public in DC. It is also common for Washington DC residents to become a Maryland notary public.  Virginia notaries also commonly get dual commissioned in Washington DC.  Just contact the state notary division that you want to apply to and ask them what their conditions are for applying for a notary public commission.  It’s common for a state to require you to be working or doing some type of business in their state.  However, offering a mobile notary service to their state / territory / district is a type of business, so you should be acceptable.
 
Notary Public Maryland
Here is the contact information for the Maryland notary public division
http://www.sos.state.md.us/Notary/Notary.aspx

 
Notary Public Virginia
Here is the contact information for the Virginia notary public division.
http://www.commonwealth.virginia.gov/Notary/notary.cfm?
 
Find a mobile notary in DC! 
Just visit the advanced search page on www.123notary.com and you will have many notaries to choose from!