|First written mention||1252|
|• Mayor||Tibor Both (Party of the Hungarian Coalition)|
|• Total||12.708 km2 (4.907 sq mi)|
|Elevation||110 m (360 ft)|
|• Estimate (2008)||373|
|• Density||29/km2 (80/sq mi)|
|• Hungarians||98,12 %|
|• Slovakians||1,34 %|
|Time zone||EET (UTC+1)|
|• Summer (DST)||EEST (UTC+2)|
|Postal Code||930 07|
|Area code(s)||+421 31|
In the 9th century, the territory of Kľúčovec became part of the Kingdom of Hungary. In historical records the village was first mentioned in 1252 as "Kwichud" when King Béla IV of Hungary donated the village to the provostship of Túróc (now: Turiec). Until the end of World War I, the village was part of Hungary and fell within the Tószigetcsilizköz district of Győr County. After the Austro-Hungarian army disintegrated in November 1918, Czechoslovakian troops occupied the area. After the Treaty of Trianon of 1920, the village became officially part of Czechoslovakia. In November 1938, the First Vienna Award granted the area to Hungary and it was held by Hungary until 1945. After Soviet occupation in 1945, Czechoslovakian administration returned and the village became officially part of Czechoslovakia in 1947.
At the 2001 Census the recorded population of the village was 372 while an end-2008 estimate by the Statistical Office had the villages's population as 373. As of 2001, 98,12 per cent of its population was Hungarians, while 1,34 per cent Slovakian. Calvinism is the majority religion of the village, while the second largest denomination is the Roman Catholic Church.
The records for genealogical research are available at the state archive "Statny Archiv in Bratislava, Slovakia"
- Roman Catholic church records (births/marriages/deaths): 1731-1898 (parish B)
- Reformated church records (births/marriages/deaths): 1791-1896 (parish A)