This publication consists of statistical data describing socio-economic potential of powiats and cities with powiat status in 2004-2008, grouped in the following chapters: environment, society, economy, living conditions and infrastructure. Presented data enable analyse and comparing socio-economic development of powiats against the background of the voivodship. The publication includes methodological notes, synthetic description of results of surveys and also an extensive table part. Published statistical data are supplemented with graphical illustrations in the form of graphs.