Jarvenpaa (Finnish pronunciation: [ˈjarʋemˌpaː]; Swedish: Traskanda) is a town and municipality in Finland. It is located on the Helsinki–Riihimaki railway track in Uusimaa region, some 37 kilometres (23 mi) north of Helsinki. Neighbouring municipalities are Tuusula, Sipoo and Mantsala. People also refer to Kerava as Jarvenpaa's neighbour, even though they do not technically share a border, thanks to the one kilometre-wide land area that belongs to Tuusula.
History
The first documented mention of the village of Jarvenpaa is found in a tax list from 1540, where it is named in Swedish as Treskendaby; starting from the next decade, its Finnish name was used in parallel, in forms such as Jerffuepa or Jaruenpaa. Around this time, the village was documented to consist of eight estates. Prior to being trasferred to the newly formed chapel of Tuusula in 1643, Jarvenpaa was part of the parish of Sipoo; Tuusula, in turn, became an independent pastorate (kirkkoherrakunta) in 1654.
While the population in Jarvenpaa had long been stagnant, it had started expanding again by the late 1700s, thanks to the evolution of agriculture at the time. In the middle of the 1800s, Jarvenpaa together with Nummenkyla formed the most populous village of Tuusula with around 450 inhabitants. Thanks to its location on the road between Helsinki and Mantsala, the village had grown into a minor concentration of commerce, with the presence of a kestikievari - a type of tavern - and several craftsmen. Thanks to these factors, one of the original intermediate stations of the Helsinki–Riihimaki railway was placed in Jarvenpaa.
Jarvenpaa was separated from its parent community Tuusula in 1951. Jarvenpaa was granted the status of a market town (kauppala) after the separation. Neighbouring districts Kellokoski and Nummenkyla were not added to the municipality of Jarvenpaa and the controversy over the issue still raises blood pressure fifty years later. In the event, Kellokoski remained part of