Kellokoski (; ) is one of the three villages in the Finnish municipality of Tuusula. It is located north of the town of Järvenpää. Kellokoski has a population of 4,400.http://www.tuusula.fi/kellokoski/ Tuusula.fi Information about Kellokoski

Kellokoski has its own church, which was built in 1734,http://www.suomiopas.fi/en/4821/kunta/Tuusula SuomiOpas Site with information about Finland and a psychiatric hospital.http://www.hus.fi/default.asp?path=59,404,19303,19317 HUS - Hospital district of Helsinki and Uusimaa

Most people speak Finnish. Earlier there were also people who spoke Swedish.

History Kellokosken ruukki, pig iron factory started 1795. Nowadays, iron products have been replaced with products made from aluminium.

Notable people from Kellokoski Antti Nykänen, basketball player

References