It is located in the province of Southern Finland and is part of the Tavastia Proper region. The municipality has a population of 5,424 (31 March 2016) and covers an area of 181.95 square kilometres (70.25 sq mi) of which 1.52 km² (0.59 sq mi) is water. The population density is 30.06 inhabitants per square kilometre (77.9/sq mi). The municipality is unilingually Finnish.

The history of Jokioinen is tightly connected to the Jokioinen estate, which was established in 1562. The estate developed into the largest estate in Finland during the time of the provincial governor von Willebrand. At the beginning of 20th century the estate had a corn mill, saw mill, a brick factory, steel plant and a sugar and syrup factory.

Due to the crofters law of 1918 and the land reform law of 1945 the estate was split into more than 1500 homes and small farms. The rest of the estate was transferred to the ownership of the Finnish state in 1918. In 1928 the Department of Finnish Plant Breeding from Tikkurila and in 1957 the observatory from Pasila were transferred to the Jokioinen estate.

A notable tourist attraction in the region is the Jokioinen Museum Railway.

Employment structure of Jokioinen by trade at the end of 2004 was following: Services 64.9%, processing 23.3%, agriculture and forestry economics 9.6%.

Employment structure by trade at the end of 2004 was following: Agriculture and forestry economics 16.3%, industry 22.0%, services 58.5%, unknown 3.2%.

Haapaniemi, Jokioinen, Jänhijoki, Kiipu, Lammi, Latovainio, Minkiö, Minkiön asema (Minkiö railway station), Niemi, Ojainen, Pellilä, Saari, and Vaulammi

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