McKenzie County was established on March 8, 1883, and named after Alexander McKenzie who was a strong political gure in North Dakota at the time. In 1905, one hundred years after Lewis & Clark made their famous trek across western North Dakota, McKenzie County was of cially organized by the North Dakota Legislative Assembly. McKenzie County was one of the last counties to be organized in North Dakota.
The firrst county seat was in Alexander (also named after Alexander McKenzie) as assigned by the governor in 1905. The county seat designation was a controversial issue in the beginning. It was quickly ̉stolenÓ from Alexander and moved to the more populous town of Schafer. The county seat question, placed on the ballot many times before, was of cially settled and moved by special election in 1940 to Watford City, the present day location.