Petersburg is a city located in Nelson County North Dakota. With a 2020 population of 169, it is the 174th largest city in North Dakota and the 17140th largest city in the United States . Petersburg is currently declining at a rate of -1.17% annually and its population has decreased by -11.98% since the most recent census, which recorded a population of 192 in 2010. Petersburg reached it's highest population of 192 in 2010. Spanning over 1 miles, Petersburg has a population density of 164 people per square mile.
The average household income in Petersburg is $65,852 with a poverty rate of 16.57%. The median rental costs in recent years comes to $717 per month, and the median house value is $85,000. The median age in Petersburg is 35.9 years, 39.5 years for males, and 35.3 years for females.