Kotka is a town in Finland, located on the southeastern coast of the country at the mouth of the Kymi River. The population of Kotka is approximately 51,000, while the sub-region has a population of approximately 80,000. It is the 21st most populous municipality in Finland, and the 16th most populous urban area in the country. Kotka is situated in the southern part of the Kymenlaakso province of Finland. Kotka is a major port and industrial city situated on the coast of the Gulf of Finland.