Helsinki Metropolitan Area in the context of "Helsinki capital region"

Järvenpää (Finnish: [ˈjærʋemˌpæː]; Swedish: Träskända, Finland Swedish: [ˈtreskenˌda]; lit. 'lake's end') is a town in Finland, located in the southern interior of the country. Järvenpää is situated in the centre of the Uusimaa region in the immediate vicinity of Lake Tuusula. The population of Järvenpää is approximately 47,000. It is the 24th most populous municipality in Finland. Järvenpää is part of the Helsinki Metropolitan Area, which has approximately 1.62 million inhabitants.

Järvenpää is located on the Helsinki-Riihimäki railway line in the Uusimaa region, about 37 kilometres (23 mi) north of Helsinki. Neighbouring municipalities are Tuusula, Sipoo and Mäntsälä. People also refer to Kerava as Järvenpää's neighbour, although technically they do not share a border due to the one kilometre-wide strip of land that belongs to Tuusula.

Espoo (/ˈɛspoʊ/, Finnish: [ˈespoː]; Swedish: Esbo) is a city in Finland. It is located to the west of the capital, Helsinki, in southern Uusimaa. The population is approximately 324,000. It is the 2nd most populous municipality in Finland. Espoo is part of the Helsinki Metropolitan Area, which has approximately 1.6 million inhabitants. Espoo is on the northern shore of the Gulf of Finland and borders Helsinki, Vantaa, Kirkkonummi, Vihti and Nurmijärvi. The city includes the enclave of Kauniainen. Espoo covers an area of 528 square kilometres (204 sq mi). Espoo is a bilingual municipality with Finnish and Swedish as its official languages. The population consists of 69% Finnish speakers, 6% Swedish speakers, and 25% speakers of other languages, well above the national average.

Espoo was settled in the Prehistoric Era, with evidence of human settlements dating back 8,000 years. However, the population disappeared during the early Iron Age. During the Early Middle Ages, the region was populated by Tavastians and Southwestern Finns. Following the Northern Crusades, Swedish settlers began to emigrate to the coastal regions of modern-day Finland. Espoo was founded as an autonomous Catholic parish in the 15th century. Following the conclusion of the Finnish War, the decision to make Helsinki the new capital of the Russian-controlled Grand Duchy of Finland in 1812 had a significant positive impact on the municipality's growth and development. Nevertheless, the territory continued to be mainly agrarian until the 20th century. After World War II, Espoo underwent swift urbanization and significant demographic shifts, with Finnish becoming the majority language around 1950, replacing Swedish. The municipality attained market town status in 1963 and was granted city status in 1972.

Vantaa (Finnish pronunciation: [ˈʋɑntɑː]; Swedish: Vanda, Finland Swedish: [ˈvɑnːdɑ]) is a city in Finland. It is located to the north of the capital, Helsinki, in southern Uusimaa. The population of Vantaa is approximately 253,000. It is the 4th most populous municipality in Finland. Vantaa is part of the Helsinki Metropolitan Area, which has approximately 1.6 million inhabitants.

The administrative centre of Vantaa is located in the Tikkurila district. Vantaa lies in Southern Finland and shares borders with Helsinki, the Finnish capital, to the south, Espoo to the southwest, Nurmijärvi to the northwest, Kerava and Tuusula to the north, and Sipoo to the east. The city covers a total area of 240.35 square kilometres (92.80 sq mi), of which 1.97 km (0.76 sq mi) is water.

Kauniainen (Finnish: [ˈkɑu̯niˌɑi̯nen]; Swedish: Grankulla) is a town in Finland, located in the southern interior of the country. Kauniainen is situated in the southern part of the Uusimaa region, and it is enclaved by the City of Espoo. The population of Kauniainen is approximately 10,000. It is the 95th most populous municipality in Finland. Kauniainen is part of the Helsinki Metropolitan Area, which has approximately 1.62 million inhabitants.

Kauniainen was founded by a corporation in 1906, AB Grankulla, that parcelled land and created a suburb for villas; Kauniainen received the status of a market town in 1920, the Finnish name in 1949 and the title of kaupunki ("city, town") in 1972.

Kerava (Finnish pronunciation: [ˈkerɑʋɑ]; Swedish: Kervo) is a town in Finland, located in the southern interior of the country. Kerava is situated in the centre of the Uusimaa region. The population of Kerava is approximately 39,000. It is the 30th most populous municipality in Finland. Kerava is part of the Helsinki Metropolitan Area, which has approximately 1.62 million inhabitants.

Kerava's neighbouring municipalities are Vantaa, Sipoo and Tuusula.

Finnish national road 4 (Finnish: Valtatie 4 or Nelostie; Swedish: Riksväg 4 or Riksfyran; also known as Lahti Highway (Finnish: Lahdenväylä; Swedish: Lahtisleden) in the Helsinki Metropolitan Area) is a highway in Finland. It is the main route from Helsinki to Northern Finland and a major road link in the country. It runs from Erottaja in Helsinki to Sami Bridge in Utsjoki. The road is 1,295 kilometres (805 mi) long, making it Finland's longest highway. The road is also part of the European route E75 and of TERN; the section between Oulu and Kemi is part of the European route E8.

Kirkkonummi (Finnish pronunciation: [ˈkirkːoˌnumːi]; Swedish: Kyrkslätt, Finland Swedish: [ˈtɕyrːkslet] , Sweden Swedish: [ˈɕʏ̂rːkslɛt]) is a municipality in Finland, located in the southern coast of the country. Kirkkonummi is situated in the western part of the Uusimaa region. The population of Kirkkonummi is approximately 42,000. It is the 28th most populous municipality in Finland. Kirkkonummi is part of the Helsinki Metropolitan Area, which has approximately 1.62 million inhabitants.

Kirkkonummi is situated on the northern shore of the Gulf of Finland and borders Espoo, Vihti, Siuntio and Ingå. The literal translation of the Finnish name "Kirkkonummi" into English is “church heath”; the Swedish name "Kyrkslätt" translates to “church plain".