Decatur is a city located in Adams County Indiana. Decatur has a 2020 population of 35,223. It is also the county seat of Adams County. Decatur is currently growing at a rate of 0.69% annually and its population has increased by 8.65% since the most recent census, which recorded a population of 32,419 in 2010. Decatur reached it's highest population of 35,223 in 2021.
The average household income in Decatur is $63,226 with a poverty rate of 14.15%. The median rental costs in recent years comes to $930 per month, and the median house value is $119,000. The median age in Decatur is 33.1 years, 31.7 years for males, and 33.9 years for females.