58640 Frequently Asked Questions

A: ZIP Code 58640 is Located in Killdeer North Dakota. Portions of 58640 are also in Fort Berthold (Dunn County), Halliday.

A: ZIP Code 58640 is Located Entirely in Dunn County North Dakota.

A: The Current Sales Tax in ZIP Code 58640 is 7.0%

A: The Area Code for 58640 is 701.

A: 58640 is within North Dakota State House of Representatives District 4A and North Dakota State House of Representatives District 26.

A: 58640 is within North Dakota State Senate District 4 and North Dakota State Senate District 26.

A: The 2022 population of ZIP Code 58640 is 1226. The population growth rate in 58640 is -20.50%. The population density of 58640 is 2.

A: The majority race/ethnicity of people residing in 58640 is White (88.71%). The majority race/ethnicity of students attending public schools in 58640 is White(79.26%).

A: The median household income in 58640 is $89,292 (2021) and the average adjusted income is $603,900 (2021).