Janakkala is a municipality of Finland. Its seat is in Turenki. The municipalities (kunta in Finnish, kommun in Swedish) represent the local level of self government in Finland and also act as the basic regional administrative units of the country. ...

It is located in the province of Southern Finland and is part of the Tavastia Proper region. The municipality has a population of 15,517 (2003) and covers an area of 586.02 km² of which 37.76 km² is water. The population density is 26.5 inhabitants per km². Finland consists of 6 provinces (Finnish: läänit, Swedish: län), following a 1997 redesign that reduced their number from 12. ... The Province of Southern Finland is a province of Finland. ... Tavastia Proper is a region (maakunta / landskap) of Finland. ... Finland is divided into 20 regions (maakunta/landskap in Finnish/Swedish). ... 2003 (MMIII) is a common year starting on Wednesday of the Gregorian calendar. ...

The municipality is unilingually Finnish.