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Population of Watford City, ND. Last official estimated population of Watford City city (McKenzie County**, North Dakota state) was 4,206 (year 2014)[1]. This was 0.001% of total US population and 0.56% of total North Dakota state population. Area of Watford City city is 1.4 miÂ² (=3.7 kmÂ²)[6], in this year population density was 2,968.24 p/miÂ².
As of the census of 2000, there were 13,154 people, 5,421 households, and 3,561 families residing in the city. The population density was 799.4 people per square mile (308.7/kmÂ²). There were 6,259 housing units at an average density of 380.4 per square mile (146.9/kmÂ²).