From a total population of 12,641, Williston has a median age of 32.8. The average age of males, in Williston, is 31.7 while the average age of females is 34.3. When you compare this to median age of North Dakota, Williston is 3.1 years younger.
The median income of individuals, in Williston, is $42,363 while the average household income is $83,750. When comparing the median income of people living in Williston to the rest of North Dakota, the average income in Williston is $11,469 more.