Duncan is a city located in Bolivar County Mississippi. With a 2020 population of 372, it is the 236th largest city in Mississippi and the 14534th largest city in the United States . Duncan is currently declining at a rate of -1.06% annually and its population has decreased by -12.06% since the most recent census, which recorded a population of 423 in 2010. Duncan reached it's highest population of in . Spanning over 1 miles, Duncan has a population density of 406 people per square mile.
The average household income in Duncan is $50,892 with a poverty rate of 22.27%. The median rental costs in recent years comes to - per month, and the median house value is $44,400. The median age in Duncan is 49.3 years, 48.8 years for males, and 53 years for females.