The success of the Raisio Group company transformed the town into an industrial centre and triggered a huge increase in population - during the 20th century the population of Raisio increased elevenfold.

The town's existence was threatened by Turku city's plans to merge with Raisio.

Another theory about the etymology of the name Raisio is that it comes from the word raiskio, meaning a forest damaged by poor forest management, as the Raisio landscape was altered by siltation and post-glacial uplift after the Ice Age.

[7] Results of the 2019 Finnish parliamentary election in Raisio:[8] The town's location, with good transport links and close to the regional capital, has contributed greatly to its growth.

The largest employer in the town is the Raisio Group, a manufacturer of food, animal feed and health products.

Raisio is also home to Finland's largest secondary school, Vaisaaren yläkoulu.

The city of Raisio is part of the Turku region, which is the third largest urban area in Finland with 351,414 inhabitants.

[11] As English and Swedish are compulsory school subjects, functional bilingualism or trilingualism acquired through language studies is not uncommon.

In 2023, the Evangelical Lutheran Church was the largest religious group with 62.1% of the population of Raisio.