Iitti

Iitti (; ) is a municipality of Finland. It is located in the province of Southern Finland and is part of the Päijät-Häme region. The municipality has a population of () and covers an area of of which is water. The population density is . Neighbour municipalities are Heinola, Kouvola, Lapinjärvi, Lahti and Orimattila. The municipality is unilingually Finnish.

Kausala is a village and administrative center in Iitti municipality in Päijät-Häme, Finland. Kausala has a population of 3,775, which makes it the largest village of the municipality in terms of population. The significance of Kausala for the municipality is largely due to its central location along the highway, Finnish national road 12 (Vt12), and the Lahti–Kouvola railway passing through the village. The nearest lakes are Lake Leininselkä and Lake Urajärvi in the northern part of the village.

racing circuit under construction in Iitti, Finland