St. John is a city located in North Dakota. With a 2020 population of 340, it is the 114th largest city in North Dakota and the 14865th largest city in the United States . St. John is currently declining at a rate of -1.45% annually and its population has decreased by -0.29% since the most recent census, which recorded a population of 341 in 2010. St. John reached it's highest population of 362 in 2014. Spanning over 0 miles, St. John has a population density of 770 people per square mile.
The average household income in St. John is $57,318 with a poverty rate of 31.12%. The median rental costs in recent years comes to $292 per month, and the median house value is $60,900. The median age in St. John is 41.5 years, 38.9 years for males, and 45.5 years for females.