How much does an Asst. Professor - Liberal Arts make in North Dakota? The average Asst. Professor - Liberal Arts salary in North Dakota is $55,714 as of November 25, 2019, but the range typically falls between $43,887 and $68,298. Salary ranges can vary widely depending on the city and many other important factors, including education, certifications, additional skills, the number of years you have spent in your profession.