With a population of around 28,000, Heppenheim is the fourth largest town in the Bergstraße district.
The district reform at the beginning of the 1970s, when the communities of Erbach, Hambach, Igelsbach, Kirschhausen, Ober-Laudenbach, Mittershausen-Scheuerberg, Sonderbach and Wald-Erlenbach became districts of city Heppenheim, led to formation of Heppenheim as it is today: approx. 52 km² in its current size.
Hesse's southernmost district town, which hosted the Hessentag in 2004 and celebrated the 1250th anniversary of its first mention in the Lorscher Codex in 2005, can look back on a long and eventful history.