Montgomery County Executive Marc Elrich welcomes comments and suggestions. Correspondence may be sent directly to the County Executive via e-mail to address in second link below. A letter may be sent through the US postal service addressed to the County Executive at the following address: 101 Monroe Street, 2nd Floor, Rockville, MD 20850. In addition to comments, please be sure to include the resident's full name and return postal address or a reply e-mail address and phone number to receive a response.