St. Thomas is a city located in North Dakota. With a 2020 population of 303, it is the 123rd largest city in North Dakota and the 15278th largest city in the United States . St. Thomas is currently declining at a rate of -1.30% annually and its population has decreased by -8.46% since the most recent census, which recorded a population of 331 in 2010. St. Thomas reached it's highest population of 330 in 2010. Spanning over 1 miles, St. Thomas has a population density of 298 people per square mile.
The average household income in St. Thomas is $55,461 with a poverty rate of 13.03%. The median rental costs in recent years comes to $703 per month, and the median house value is $64,300. The median age in St. Thomas is 54.3 years, 54.3 years for males, and 54.3 years for females.