To compare, a residential neighborhood a fifth the population of oak park, mostly pre-war and what a German would consider as "urban":

wiki, use translator: https://de.wikipedia.org/wiki/Wichlinghausen-S%C3%BCd Maps overview with borders highlighted: https://maps.app.goo.gl/fvr34T8JbLEVQLAF8 Street view of a normal street there; though I recommend 3D view for a better understanding: https://maps.app.goo.gl/QXEGChFvHciAq8Va8?g_st=ac

This is btw. 2.9x as dense as Oak Park, IL.