Kirchseeon is a market town in the Upper Bavarian district of Ebersberg and lies 15 km east of Munich city limits.

The community grew quickly once the surrounding woodlands fell victim to a natural disaster in 1889 in the form of a nun moth infestation.

The Royal Bavarian Railway decided to make use of the denuded woods by building a sleeper works at Kirchseeon in 1889 and 1890.

Its constituent communities were the villages of Buch and Kirchseeon-Dorf as well as the hamlets of Forstseeon, Osterseeon, Neukirch, Ilching and Riedering.

Kirchseeon's arms might heraldically be described thus: In vert between two conifers with roots Or a nun moth argent.