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MGM National Harbor

Casino in Oxon Hill, MD · 101 MGM National Avenue, Oxon Hill, MD 20745

https://mgmnationalharbor.mgmresorts.com/en.html

How old do you have to be to gamble at MGM National Harbor?

18+ or 21+, depending on the casino.

Licensed by the Maryland Lottery and Gaming Control Agency.

Source: https://www.mdgaming.com/marylands-casinos/, verified 2026-10-26.

Last checked 2026-10-26.

Directory listing compiled from public operator and property information. Confirm hours and ID rules with the venue before you go.

18+ or 21+, depending on the casino.

Gambling problem? Call 1-800-GAMBLER. National Problem Gambling Helpline: 1-800-MY-RESET (1-800-697-3738).