Koski Tl (Finnish pronunciation: [ˈkoski]; Swedish: Koskis) is a municipality of Finland.

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Quick Facts Koskis, Country ...

Koski Tl Koskis
Municipality
Kosken Tl kunta Koskis kommun
Municipal hall of Koski
Coat of arms
Location of Koski Tl in Finland
Coordinates: 60°39.3′N 023°08.5′E
Country	Finland
Region	Southwest Finland
Sub-region	Loimaa sub-region
Charter	1869
Government
• Municipal manager	Aimo Suikkanen
Area  (2018-01-01)[1]
• Total	192.42 km2 (74.29 sq mi)
• Land	191.5 km2 (73.9 sq mi)
• Water	0.96 km2 (0.37 sq mi)
• Rank	265th largest in Finland
Population  (2023-12-31)[2]
• Total	2,208
• Rank	248th largest in Finland
• Density	11.53/km2 (29.9/sq mi)
Population by native language [3]
• Finnish	95% (official)
• Swedish	0.4%
• Others	4.6%
Population by age [4]
• 0 to 14	13.9%
• 15 to 64	52.7%
• 65 or older	33.4%
Time zone	UTC+02:00 (EET)
• Summer (DST)	UTC+03:00 (EEST)
Climate	Dfc
Website	koski.fi

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It is located in the Southwest Finland region and was part of the former province of Western Finland. The municipality has a population of 2,208 (31 December 2023)^[2] and covers an area of 192.42 square kilometres (74.29 sq mi) of which 0.96 km² (0.37 sq mi) is water.^[1] The population density is 11.53 inhabitants per square kilometre (29.9/sq mi).

Tl in the name means the former province of Turku and Pori (Finnish: Turun ja Porin lääni). It was attached to the name to distinguish Koski Tl from another municipality named Koski, Koski Hl (Hl for the former province of Häme, Finnish: Hämeen lääni). Koski Hl was renamed Hämeenkoski in 1995 but Koski Tl has not changed its name.

Koski is unilingually Finnish.

Koski's neighbouring municipalities are Loimaa, Marttila, Pöytyä, Salo, Somero and Ypäjä.

Hämeen Härkätie runs through Koski and it crosses the Paimio River in the center of Koski. The church of Koski was designed by architect Toivo Paatela and it was completed in 1935. There is also an observation tower near the highest points of Hevonlinna ridge and Hevonlinnanjärvi.

Yrjö Liipola Art Museum is exhibiting Yrjö Liipola's art collection.

• Koski church
• Old church bell tower
• Koski rapids