Hämeenkoski (; Koski Hl until 1995, see Koski Tl) is a former municipality of Finland. It was merged to the municipality of Hollola on 1 January 2016. It is located in the province of Southern Finland and is part of the Päijänne Tavastia region. The municipality had a population of (30 June 2015) and covered an area of of which was water. The population density was . The municipality was unilingually Finnish. Lake Pääjärvi is situated at the border between Hämeenkoski and Hämeenlinna (formerly Lammi). History Hämeenkoski was originally known as Koski. It was initially a part of the Lammi administrative division and the Hauho parish. Lammi became a separate parish in the beginning of the 15th century or slightly earlier. Koski was first mentioned as a separate parish in 1410, but it was merged into Lammi as a chapel community in 1540. The chapel was also known as Etola after another village in the area. Koski became a separate parish from Lammi in 1870. The name Hämeen-Koski was first suggested for the parish in 1897 by Väino Wallin to distinguish it from Koski Tl, at the time still a part of Marttila. Koski Hl was renamed Hämeenkoski in 1995. Hämeenkoski was consolidated with Hollola in 2016. References External links Municipality of Hämeenkoski – Official website Hämeenkoski Former municipalities of Finland Populated places established in 1865