The subject of this research is the participants of cooperative movement that unfolded in Leningrad in 1987 – 1991. During this period, the country legalized the citizens’ right to establish industrial cooperatives, which de facto have become private enterprises. Leningrad turned into one of the largest centers of cooperative movement in the USSR, and members of the cooperatives – a considerable part of urban society. Attention is given to the situation of cooperatives in Leningrad prior to their transition into the non-state sector of the economy. The author explores such sociocultural characteristics of the cooperative member as the attitude towards socialist system, Soviet regime, experience of party and Komsomol life, work skills, and age characteristics. It is revealed that the majority of participants of cooperative movement prior to transition into the non-state sector of the economy had a stable social status and were loyal to the Soviet system, and many of them held senior positions. Among the members of cooperative were also the members of CPSU and Komsomol activists. Their performance efficiency and high professionalism were often noted by the party and state authorities. This casts doubt on the widespread opinion about the marginal status of the participants of cooperative movement. Moreover, the attempt to attract people not involved in public production was unsuccessful; compared to the working age citizens, householders, pensioners, people with disabilities, and students met in the cooperative community were a rarity. The article relies on the archival documents, newspaper materials, sources of personal origin, as well as the results of interviews conducted by the author with former employees of the cooperative.