Kouvola's central location within Finland's borders and as a border post between the European Union and Russian Federation makes it a quite lively town. The town originally grew up around the junction of the north–south and east–west rail tracks.
In January 2009, the six municipalities – Kouvola, Kuusankoski, Elimäki, Anjalankoski, Valkeala and Jaala – were consolidated, forming the new municipality of Kouvola. Kouvola can now claim the natural beauty of Valkeala and Jaala as well as the cultural heritage of Elimäki and Anjalankoski as its own. Kouvola has also assumed the slogan Kymijoen kaupunki (the town of Kymijoki) previously used by Anjalankoski