Dietzenbach is located 10km south of Frankfurt and Offenbach, next to Neu-Isenburg (west) and Rodgau (east).
The increasing demand for apartments forced politicans in 1972 to declare Dietzenbach the first state city with special taxation support. Many low cost residential buildings were constructed, but only a few germans accepted the new residential zones. Instead, many people from foreign countries moved to the city. As a result, it today has Germany's highest rate of people with no german passport. 34 percent of the city's inhabitants are from foreign countries (this rate is at an average of 8% nationwide).