Nurmijärvi () is a municipality in Finland, located in the southern interior of the country. Nurmijärvi is situated in the Uusimaa region. The population of Nurmijärvi is approximately . It is the most populous municipality in Finland and the most populous municipality without city status (). Nurmijärvi is part of the Helsinki metropolitan area, which has approximately  million inhabitants.

Nurmijärvi is located north of the capital, Helsinki. Nurmijärvi's neighbouring municipalities are Espoo, Vantaa, Tuusula, Hyvinkää and Vihti. In recent decades, Nurmijärvi has been one of the fastest growing municipalities in the Helsinki Metropolitan Area and in Finland as a whole because of its proximity to Helsinki. The municipality does not have a single clear residential settlement, but is divided into mainly four areas: the largest urban area in the southern part of the municipality, Klaukkala (over 20,000 inhabitants); the administrative centre of the municipality, Nurmijärvi (almost 8,000 inhabitants); the northern settlement of Rajamäki (over 7,000 inhabitants); and the small settlement of Röykkä (over 1,500 inhabitants) in the northwestern part.

Nurmijärvi literally means "lawn lake" although the lake that gave the municipality its name was drained in the early 20th century and is now nothing more than some flat fields near the village centre. Nurmijärvi is one of three municipalities in the Uusimaa region that does not have a Swedish name, the others being Askola and Mäntsälä.

History

The area of what is now Nurmijärvi was inhabited in prehistoric times, indicated by archaeological finds dating back to 4500–3500 BC. At the start of the Middle Ages there was no permanent settlement in the area, but later settlement spread from both Tavastia and the coast, such that in 1540 there were 15 villages with 115 houses.

Administratively, Nurmijärvi has been formed by combining areas of Loppi, Vihti and Helsinki parishes. The earliest documentary mention of Nurmijärvi dates back to 1488, when the village of Uotila was mentioned. According to the land register of 1539, Nurmijärvi had 15 villages with a total of 113 houses. An independent congregation had already been formed in 1605 and the administrative parish of Nurmijärvi was formed in 1775, when the area had a population of 1471.

The first church in Nurmijärvi (likely St. Martin's Church, mentioned in 1565) was built at the end of the Middle Ages. It was demolished to give way to a new church, completed in 1692, and the present church, completed in 1793 and designed by Matti Åkerblom, is the third in order.Hannu Tarmio, Pentti Papunen & Kalevi Korpela: Suomenmaa 5: maantieteellis-yhteiskunnallinen tieto- ja hakuteos, p. 405–406. Porvoo-Helsinki: WSOY, 1973.

Nurmijärvi has long been a strong agricultural parish, and the share of fields in the total municipal area is almost one third, which is more than in many other municipalities in Finland. Horticultural crops have also been heavily cultivated and, for example, almost half of the wild cabbage harvest in Finland is produced in Nurmijärvi. Nevertheless, the municipality has not carried out further processing of agricultural products; for example, there has been no dairy.

The first industrial plants were born in the late 19th century, including Finland's first pharmaceutical factory founded by pharmacist Albin Koponen in Nurmijärvi in 1899. The main products of the drug plant were filizine extracted from male fern root rhizomes, which were sold as Diphyllobothrium latum and cestoda medicines called Filisin and Filicon. The factory-produced filicin was sold encapsulated all the way to China and America. Today, trade, transport and other services account for two thirds, industry and construction for less than one third and agriculture for over 3% of the population. The largest individual employers are Altia Oyj and Teknos Oy in Rajamäki, Polimoon Oy in Klaukkala and Korsisaari Oy.

In the early 1960s, the settlement of Nurmijärvi was evenly distributed in different parts of the municipality. However, migration to Nurmijärvi began to accelerate around the middle of the decade and the focus of settlement shifted to the southern parts of the municipality. Already in 1970 the majority (65%) of the inhabitants of Nurmijärvi lived in urban settlements. The largest agglomerations at that time were Klaukkala (3,500 inhabitants), Rajamäki (3,400 inhabitants) and church village (2,800 inhabitants). Of these, the growth of Klaukkala and church village, in particular, has been based almost exclusively on the vicinity of the Helsinki metropolitan area. The most prominent farms on Lake Nurmijärvi have been the manors of Numlahti and Raala. Before the departure of Hyvinkää in 1917, the Kytäjä Manor as well as the whole of the Kytäjä village, were part of the Nurmijärvi parish.

The measuring instruments of the Finnish Meteorological Institute located in Nurmijärvi were the first to detect the rising radiation levels caused by the Chernobyl disaster on Sunday, April 27, 1986, the day after the disaster.

Geography

Nurmijärvi is located in the central part of Uusimaa. Salpausselkä passes through the northern part of the municipality via Röykkä, Kiljava and Rajamäki, and the River Vantaa flows through the Nukari and Palojoki rivers in the eastern part of the municipality. Nurmijärvi's lowest terrain is in the Luhtajoki valley at Klaukkala and the highest in Salpausselkä near Herunen.

There are few watercourses in the Nurmijärvi area. The municipality is located along the middle course of the River Vantaa and there are two large rapids, the Nukarinkoski and the Myllykoski. The Kuhakoski rapids, located in the village of Perttula and flowing into Lake Valkjärvi, is also significant in terms of industrial history and at the same time a popular attraction with its waterfall.Kuhakoski - Suomen vesiputoukset (in Finnish)Uudenmaan suurin vesiputous, Nurmijärven Kuhakoski - Retkipaikka (in Finnish) The River Vantaa is joined by the Palojoki River from Hyvinkää and Tuusula, near the Palojoki village. The Lepsämä River and the Luhtajoki River flowing in the southern part of the municipality join the Vantaa town side near the Keimola village before joining the River Vantaa. The largest lake in Nurmijärvi is the Lake Sääksi (which is partly situated on the northwest side of Hyvinkää), which is known for one of the most popular beaches in Finland,Suomen 10 upeinta uimarantaa – pulahda täällä kesälomareissulla (in Finnish) being located in the Kiljava village. The other lakes are Lake Vaaksi near Röykkä and Lake Valkjärvi between Klaukkala and Perttula.

Villages

Herunen, Järventausta, Kiljava, Klaukkala, Leppälampi, Lepsämä, Luhtajoki, Metsäkylä, Nukari, Numlahti, Nummenpää, Nurmijärvi (Kirkonkylä), Palojoki, Perttula, Raala, Rajamäki, Röykkä, Suomies, Uotila, Valkjärvi

Urban areas

Table of the all statistical urban areas of the municipality. The administrative centre is in bold.

# Urban area Population(31 December 2020)Taajamat väkiluvun ja väestöntiheyden mukaan, 2020 – Statistics Finland (in Finnish)Taajama- ja haja-asutusalueväestö iän ja sukupuolen mukaan kunnittain, 2020 – Statistics Finland (in Finnish) 1 Klaukkala 20,683 2 Nurmijärvi (Kirkonkylä) 7,773 3 Rajamäki 7,494 4 Röykkä 1,593 5 Nukari 346 6 Palojoki 331 7 Leppälampi 272

Demographics

The municipality of Nurmijärvi has inhabitants, making it the most populous municipality in Finland. The municipality of Nurmijärvi is part of the Helsinki metropolitan area, which is the largest urban area in Finland with inhabitants.

Immigration Population by country of birth (2025) Country of birth Population % 41,790 92.2 1,115 2.5 489 1.1 237 0.5 110 0.2 91 0.2 90 0.2 86 0.2 78 0.2 74 0.2 Other 1,263 2.8

In Nurmijärvi, 7% of the population has a foreign background, which is below the national average.

Religion

63.9% of Nurmijärvi's residents belong to the Evangelical Lutheran Church of Finland, compared to 63.6% nationwide (2023). 2.3% of the population belong to other religious denominations, and 33.8% of the population are unaffiliated. The Nurmijärvi parish, which is part of the Diocese of Espoo, is part of the Evangelical Lutheran Church of Finland.

Among the revival movements, the Conservative Laestadianism movement is represented by the , which has over 490 members and whose office building, built in 1996, is located in Perttula. The Nurmijärvi Pentecostal Congregation, with approximately 200 members, operates in the area of the Pentecostal revival. Of the congregations of the Orthodox Church of Finland, the Helsinki Orthodox Parish operates in the Nurmijärvi area, and the only Orthodox church in Nurmijärvi is the St. Nectarios Church in Klaukkala.

In 2009, the Finnish-Thai Buddhist Association bought a house in Nukari where a Thai Buddhist temple was established, Buddharama temppeli - Nurmijärvi (in Finnish) making it the largest of Finland's three Thai Buddhist temples.Pieni keltainen talo toi Phramaha Nuanin Nukarille – nyt Buddharama-temppeli valmistautuu uudisrakennuksen avajaisiin - Nurmijärven Uutiset (in Finnish)

Government

The municipality of Nurmijärvi belongs to the Uusimaa constituency. Nurmijärvi Municipal Council has 51 members; the chairman of the municipal board is Virpi Räty and the municipal council is Kallepekka Toivonen. The current municipal manager of Nurmijärvi is Outi Mäkelä; the previous manager, Kimmo Behm, retired on 1 May 2018.Outi Mäkelä valittiin Nurmijärven uudeksi kunnanjohtajaksi (in Finnish)

Politics Results of the 2019 Finnish parliamentary election in Nurmijärvi:

National Coalition Party 25.9% Finns Party 25.2% Social Democratic Party 17.3% Centre Party 9.4% Green League 5.6% Movement Now 4.9% Christian Democrats 4.3% Left Alliance 2.9% Swedish People's Party of Finland 1.4% Freedom Alliance 1.1%

Culture Nurmijärvi is best known as the birthplace of Finland's national author, Aleksis Kivi. The coat of arms of municipality refers to his most famous literal work, Seitsemän veljestä (literally translated "the seven brothers") from 1870. Every year, the municipality hosts the Kivi Festival (Kivi-juhlat), the main venue of which is the Taaborinvuori museum area next to Aleksis Kivi's birthplace. On January 29, 2020, Nurmijärvi declared itself officially the Capital of Aleksis Kivi.

In the town center of Nurmijärvi is the small cinema Kino Juha, which has been in use since 1958 and is the size of only one hall.Kino Juha - Official Site (in Finnish) In Klaukkala, there is a multipurpose building Monikko, where many kinds of events are organized, such as concerts or other live events.

The title bird of Nurmijärvi is the black woodpecker (Dryocopus Martinus), the title animal is the European badger (Meles meles) and the title plant is the male fern (Dryopteris filix-mas).Vaakuna ja tunnukset - Nurmijärvi.fi (in Finnish)Historiikki - Nurmijärven Luonto Ry (in Finnish)

Food In the 1980s, the cultural dishes of Nurmijärvi parish were called pastries with raisin soup, a roast beef cured slowly in mild heat, berry cream and sweetened potato casserole.Kolmonen, Jaakko 1988. Kotomaamme ruoka-aitta: Suomen, Karjalan ja Petsamon pitäjäruoat, s. 59. Helsinki: Patakolmonen Ky. (in Finnish)

Dialect The Finnish language spoken in the Nurmijärvi area is based on the Southern Tavastian dialect, which belongs to the Tavastian dialects. The dialect has influences from southwestern intermediate dialects and the dialects of Swedish-speaking Finns. Characteristic features of the Nurmijärvi dialect are the widening of diphthongs, the r-sound as a weak equivalent of t, and the tt (long /t/) representation of the ts combination. There is also a final throw. The Nurmijärvi dialect forms a subgroup together with Hyvinkää and Tuusula.

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