The area of the district is 410hectares. 52.5% is agriculturally used area, 32.3%forest area, 7.7% settled area and roads, 5.3% water expanse, and 2.2% other.
Bad Niedernau has a current population of 569 people. In order to that Bad Niedernau is among the smaller districts of Rottenburg. The population density is 139 people perkm², according to an area of 4.10 km².