Lappajärvi is a municipality in Finland in Southern Ostrobothnia region. It is 78 kilometres (48 mi) from Lappajärvi to Seinäjoki, 80 kilometres (50 mi) to Kokkola and 117 kilometres (73 mi) to Vaasa. The municipality has a population of 2,789 (31 December 2023)^[2] and covers an area of 522.98 square kilometres (201.92 sq mi) of which 102.89 km² (39.73 sq mi) is water.^[1] The population density is 6.63 inhabitants per square kilometre (17.2/sq mi).

You can help expand this article with text translated from the corresponding article in Finnish. (June 2023) Click [show] for important translation instructions. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing Finnish Wikipedia article at [[:fi:Lappajärvi]]; see its history for attribution. You should also add the template {{Translated|fi|Lappajärvi}} to the talk page. For more guidance, see Wikipedia:Translation.

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Lappajärvi
Municipality
Lappajärven kunta Lappajärvi kommun
Coat of arms
Location of Lappajärvi in Finland
Coordinates: 63°13′N 023°38′E
Country	Finland
Region	Southern Ostrobothnia
Sub-region	Järviseutu sub-region
Charter	1865
Government
• Municipal manager	Sami Alasara
Area  (2018-01-01)[1]
• Total	522.98 km2 (201.92 sq mi)
• Land	420.89 km2 (162.51 sq mi)
• Water	102.89 km2 (39.73 sq mi)
• Rank	200th largest in Finland
Population  (2023-12-31)[2]
• Total	2,789
• Rank	225th largest in Finland
• Density	6.63/km2 (17.2/sq mi)
Population by native language [3]
• Finnish	94.6% (official)
• Swedish	0.4%
• Others	5%
Population by age [4]
• 0 to 14	13.9%
• 15 to 64	50.3%
• 65 or older	35.8%
Time zone	UTC+02:00 (EET)
• Summer (DST)	UTC+03:00 (EEST)
Website	www.lappajarvi.fi

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The municipality is unilingually Finnish.

Lake Lappajärvi, which gives the name to the municipality, is a meteor crater, one of the few meteor crater lakes found in Finland.

Singer and performer, Timo Kotipelto from the worldwide known Finnish power metal band Stratovarius was born and raised in Lappajärvi.

• Johannes Bäck (1872 – 1952)
• Aleksi Hakala (1886 – 1959)
• Veikko Savela (1919 – 2015)
• Jarmo Övermark (1955 – )
• Arto Melleri (1956 – 2005)
• Seppo Särkiniemi (1957 – )
• Jussi Lampi (1961 – )
• Timo Kotipelto (1969 – )
• Petra Olli (1994 – )

• Lappajärvi Church