The article refers to features of local authorities connected with communes’ development level. There were formed synthetic index which demonstrates the rate of local development. Taking into account the indices, the local communities were divided into two groups (25% of the least developed and 25% of the most developed). In the next step local government representatives responded questions in a survey, that was carried out in 2007 in those communes. The results concern 117 communes, which make 37,3% of all communes in Mazowieckie Voivodship. The outcomes were similar in both group of communes. Relatively high standard of interpersonal trust was noticed.

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