[3] Clockwise from the north, Sankt Katharinen’s neighbours are the municipalities of Sommerloch, Roxheim, Mandel and Braunweiler, all of which likewise lie within the Bad Kreuznach district.

As at 31 December 2013, there are 367 full-time residents in Sankt Katharinen, and of those, 88 are Evangelical (23.978%), 208 are Catholic (56.676%) and 71 (19.346%) either have no religion or will not reveal their religious affiliation.

[6] The municipality’s arms might be described thus: Argent in base an inescutcheon chequy of twenty azure and Or standing behind and above which Saint Catherine vested gules, crined and crowned of the third holding in her dexter hand a sword of the fourth hilted and pommelled of the third palewise point to base, and in her sinister hand half a wheel spoked of four sable.

The following are listed buildings or sites in Rhineland-Palatinate’s Directory of Cultural Monuments:[7] All the following works are in German: Sankt Katharinen lies at the junction of Kreisstraßen 50 and 51, which in fact run concurrently for one block through the village centre as Klosterstraße (“Monastery Street”), a reference to the village’s monastic origins.

Running on the line to Saarbrücken and by way of Gau Algesheim and the West Rhine Railway to Mainz are Regional-Express and Regionalbahn trains.