For residents of North Dakota looking for 18+ casinos, the options are limited. North Dakota state gambling laws permit 21+ players at land based casinos, whilst there are online options that have a minimum age of 18+.
Here is a list of casinos in North Dakota and their minimum gambling age.
| Casino | Address | Legal Age |
| 4 Bears Casino & Lodge | 202 Frontage Rd, Bismarck, ND 58763 | 21+ |
| Dakota Magic Casino | 16849 102nd St SE, Hankinson, ND 58041 | 21+ |
| Grand Treasure Casino | 4418 147th Ave NW, Bismarck, ND 58801 | 21+ |
| Prairie Knights Casino & Resort | 7932 ND-24, Bismarck, ND 58538 | 21+ |
| Southgate Casino Bar & Grill | 2525 S Washington St, Grand Forks, ND 58201 | 21+ |
| Spirit Lake Casino & Resort | 7889 ND-57, Fargo, ND 58370 | 21+ |