Neighboring municipalities are (clockwise, starting in the north): Rendsburg, Jevenstedt and Schülp.

The place, which was located at a ford (crossing) of the eider river at the Ochsenweg, was first mentioned in the Kieler Erbebuch in 1437.

By refugees, who found a new home in Westerrönfeld, the number of inhabitants grew after the Second World War from 1500 to 2500.

The wavebars in the crest, marks not only the Eider river but also the Kiel canal, which borders at the municipality to the north.

The anchor in the coat of arms indicates that canal and, before that, eider navigation meant participation in waterway traffic for the town.

At the same time, the wavebars can be understood as a "talking" translation of the village name "Feld bei der Rinne" (in Low German: "Rönn").

What is meant is the Wehrau, which flows through the neighboring community of Osterrönfeld into the Kiel Canal.

The places Tingleff in Danemark and Züssow in Mecklenburg-Vorpommern are the partner communities of Westerrönfeld.