Little information is known about the composition of bacterial diversity associated with roots of Vigna mungo plant. With this background, the present study was carried out to investigate the diversity of bacterial isolates and PGP activity of rhizobacteria from the soils of Vigna mungo, grown in different regions of Indo Gangetic plains. Investigations of the rhizobacterial population associated with collected soils done by the means of colony forming units using serial dilution agar plate technique. In this context, total bacterial count, occurrence percentage, rhizospheric to soil (R: S) ratios were examined. Total bacterial count of all soil samples were found to be in the range of 12×105 to 98×105 with occurrence percentage of 1.07% to 92.85%. The values of R: S ratio lies in between 0.85 to 3.25 which is above 1 clearly indicates presence of positive rhizospheric effect in soil samples of Indo Gangetic plains. From the rhizosphere of selected plant, a total of seventeen bacteria were isolated and checked for Indole-3 acetic acid production colorimetrically using Salkowski reagent. Among all the isolates, IAA production was positively exhibited by majority of bacterial isolates and were found to produce IAA in the range of 34.97 and 90.64 µg/ml. In our findings, two isolates IGV6 and IGV7 showed best positive result for indole-3-acetic acid production. Therefore, these promising isolates can be considered for as possible phytostimulator and bio-inoculant in rhizosphere of Vigna mungo plant. In addition to this, bacterial communities associated with rhizosphere of Vigna mungo plant acting as a reservoir of species which can be further explored for their bioprospecting potential and its application in agriculture and industry.