Max is a city in McLean County, North Dakota, United States. The population was 331 at the 2020 census. Max was founded in 1906. B…Max is a city in McLean County, North Dakota, United States. The population was 331 at the 2020 census. Max was founded in 1906. Before 1906, rumors were circulating that the Soo Line would lay track close to Elbow Lake, north of Garrison, to obtain water for their steam engines. On this prospect, enterprising businessmen swiftly began staking claims in anticipation of purchasing prime real estate in a new town. A haphazard shack-building boom ensued on the surrounding ambling prairies. On August 8, 1906, a surveyor named J.G. Sheldrick filed a certificate to plat what would become the Max townsite on a grid.