|Elevation||113 m (371 ft)|
|Area||28 km2 (11 sq mi)|
|Density||93/km2 (241/sq mi)|
|Postal code||946 14|
|Wikimedia Commons: Zemianska Olča|
|Statistics: MOŠ/MIS[permanent dead link]|
In the 9th century, the territory of Zemianska Olča became part of the Kingdom of Hungary. In historical records the village was first mentioned in 1247. After the Austro-Hungarian army disintegrated in November 1918, Czechoslovak troops occupied the area, later acknowledged internationally by the Treaty of Trianon. Between 1938 and 1945 Zemianska Olča once more became part of Miklós Horthy's Hungary through the First Vienna Award. From 1945 until the Velvet Divorce, it was part of Czechoslovakia. Since then it has been part of Slovakia.
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