Urban settlements in Poland have developed over time, leading to problems such as overpopulation and spatial expansion, which threaten the environment and create spatial chaos. Changes in the demographic structure in Poland led to the need for systematized settlement development. Since 1989, Polish urban areas have undergone significant metamorphosis, with some becoming depopulated and others becoming metropolitan areas. The high autonomy of municipalities allowed for uncontrolled growth of the settlement network, also in typically rural directions. The 2006 Act mandated regional development strategies and urban spatial development plans for voivodship self-governments, but this has not produced adequate results. Cities continue to grow, often causing problems for society, local authorities, and natural ecosystems. This study examined the potential for urban settlement development using k-means cluster analysis to calculate the buildable area, taking in the detail of three case studies: Warsaw, Lodz, and Olsztyn. This allowed the classification of towns into zones corresponding to their level of urbanization. The k-means method used in the study gave similar and even more efficient results than the manual classification. This may contribute to stopping the growing urban expansion into rural areas inadequately prepared for the change in urban structure. This research can help to maintain sustainability and compensate for the problems of pollution in urban and rural areas.
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