Aberdeen is a city located in Brown County South Dakota. With a 2020 population of 27,859, it is the 3rd largest city in South Dakota (after Sioux Falls and Rapid City) and the 1380th largest city in the United States . Aberdeen is currently declining at a rate of -0.71% annually but its population has increased by 6.78% since the most recent census, which recorded a population of 26,091 in 2010. Aberdeen reached it's highest population of 28,490 in 2017. Spanning over 16 miles, Aberdeen has a population density of 1,737 people per square mile.
The average household income in Aberdeen is $70,364 with a poverty rate of 12.60%. The median rental costs in recent years comes to $685 per month, and the median house value is $161,800. The median age in Aberdeen is 35.5 years, 34.9 years for males, and 36.1 years for females.