St. Lawrence is a city located in South Dakota. With a 2020 population of 196, it is the 185th largest city in South Dakota and the 16762nd largest city in the United States. St. Lawrence is currently growing at a rate of 1.03% annually but its population has decreased by -1.01% since the most recent census, which recorded a population of 198 in 2010. St. Lawrence reached it's highest population of 198 in 2010. Spanning over 0 miles, St. Lawrence has a population density of 572 people per square mile.
The average household income in St. Lawrence is $73,733 with a poverty rate of 3.96%. The median rental costs in recent years comes to $788 per month, and the median house value is $79,400. The median age in St. Lawrence is 40.3 years, 41.5 years for males, and 38.5 years for females. For every 100 females there are 94.2 males.