There were 150 000 people living in Central Finland in 1920. Martti Korpilahti wrote the words for the provincial song of Central Finland. Other poems and compositions fit to be a provincial song were suggested, too. The state took steps to reorganise the country's division into administrative districts. The Regional Council of Central Finland, established as a result of the provincial meeting in 1929, progressed into an important proponent of a separate administrative district in the 1930s.

Associations and economic life continued to organise themselves on a provincial basis. The women of Central Finland held regular conventions from1923 onwards. From 1924 onwards the provincial meeting was staged jointly by Central Finland's agricultural, co-operative, youth and temperance organisations. The economic development of the province was based on the growth of the wood and metal industries and on more effective methods of agriculture. The settling of landless people shaped the countryside's social structure, adding to the number of small farms. Automotive traffic began to complement rail and boat traffic, for instance, in the transportation of timber.