Md. Code, Criminal Law § 13–2606

The following organizations may conduct bingo in accordance with this part:

(1) a bona fide religious organization that has conducted religious services at a fixed location in the county for at least 6 years before applying for a license under this part;

(2) a municipal corporation in the county;

(3) a volunteer fire company in the county;

(4) a local unit of a nationwide bona fide nonprofit organization or club that consists solely of members who served in the armed forces of the United States; or

(5) a nonprofit organization that:

(i) intends to raise money for an exclusively charitable or educational purpose that is specifically described in the license application filed with the Department; and

(ii) has operated as a nonprofit organization in the county for at least 5 years before applying for a license under this part.