Kotka is a city in the southern part of the Kymenlaakso province on the Gulf of Finland. Kotka is a major port and industrial city and also a diverse school and cultural city, which was formerly part of the old Kymi parish; later, Kymi with the Haapasaari island and Karhula, the latter of which once separate from Kymi as the market town, were incorporated into Kotka. The neighboring municipalities of Kotka are Hamina, Kouvola and Pyhtää. Kotka belongs to the Kotka-Hamina subdivision, and with Kouvola, Kotka is one of the capital center of the Kymenlaakso region. It is the 19th largest city in terms of population as a single city, but the 12th largest city of Finland in terms of population as an urban area.