Hedgewar intensified his contacts and established personal rapport with a large number of people. In 1925, he founded the Rashtriya Swayamsevak Sangh, on the auspicious day of Vijaya Dashami.

From little acorn grows the mighty oaktree. Little droplets make the vast ocean. One heart joining with the other hearts, the strength of Sangh soon grew. People began to attend the Sangh Shakhas irrespective of their being rich or poor, no matter to what caste they belonged. Hedgewar maintained personal contacts with them all. He busied himself in the thought and work for the Sangh day and night. In fact, poverty in his house was unredeemed. How to run the house with the meagre and uncertain earnings from his elder brother's priestly profession? Doctor Hedgewar had a number of very close and well-meaning friends.

They all were concerned about him and his household. He never sent anyone back without some kind of hospitality. This did involve expense; and resources were scarce.

Some friends of Doctor Hedgewar decided to collect some amount every month to help in the upkeep of the house. But Keshavrao politely and firmly declined the offer and told them, "No money should be collected from the society and spent for my sake." There the matter rested.

Gradually all his associates had begun to endearingly call Keshavrao Hedgewar as 'Doctorji'.

Wherever he went, he created a lively atmosphere full of mirth and enthusiasm around him.