Köppern has a street hockey team, trained by, among others, professional hockey player Ingo Schwarz, who plays for Rote Teufel Bad Nauheim.
Friedrichsdorf was given its first civic coat of arms in 1821 in remembrance of Russian Princess Alexandra's - and her eight guests' - visit to Count Friedrich in Bad Homburg: In azure a ring of nine roses argent (i.e. a blue shield with a ring of nine silver roses).