Oldenburg is a city located in Franklin County Indiana. With a 2020 population of 667, it is the 373rd largest city in Indiana and the 12084th largest city in the United States . Oldenburg is currently growing at a rate of 0.30% annually but its population has decreased by -1.04% since the most recent census, which recorded a population of 674 in 2010. Oldenburg reached it's highest population of 677 in 2011. Spanning over 0 miles, Oldenburg has a population density of 1,552 people per square mile.
The average household income in Oldenburg is $68,990 with a poverty rate of 21.18%. The median rental costs in recent years comes to $533 per month, and the median house value is $171,200. The median age in Oldenburg is 61.2 years, 53.8 years for males, and 66.8 years for females.