St. Martin is a city located in Mississippi. St. Martin has a 2020 population of 8,203. St. Martin is currently declining at a rate of 0.00% annually and its population has increased by 6.12% since the most recent census, which recorded a population of 7,730 in 2010. St. Martin reached it's highest population of 8,245 in 2016.
The average household income in St. Martin is $54,738 with a poverty rate of 12.53%. The median rental costs in recent years comes to $897 per month, and the median house value is $115,700. The median age in St. Martin is 31.8 years, 30.5 years for males, and 34.4 years for females. For every 100 females there are 91.3 males.