The first time Zeilarn was mentioned in a document was in 788 as Cidlar in the index of the archdiocese Salzburg. Later the village belonged to the county Leonberg, after its extinction in 1319 the counts of Hals inherited the properties.
The first time Zeilarn was documented in a record was in 788 as Cidlar in the Salzburg archdiocese index. Later, the village was under the jurisdiction of the Leonberg county, after its disappearance in 1319, the Hals counts took over the properties.