Kerava is a town in Finland, located in the southern interior of the country. Kerava is situated in the centre of the Uusimaa region. The populatio…Kerava 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 38,000. It is the 30th most populous municipality in Finland. Kerava is part of the Helsinki Metropolitan Area, which has approximately 1.6 million inhabitants.