Senior citizens face numerous health problems, and their health deteriorates as they age. As a result, a significant proportion of older people's budgets are spent on medication. Therefore, the authors of the study focused on the relationship between the influx of senior citizens to the city and the accessibility of one of the selected medical services, i.e., pharmacies. They established the place of residence of the migrating seniors using the obtained database. The distribution of 317 pharmacies located in the city of Krakow was also recorded. Thanks to these databases, it was possible to determine the housing environment of seniors after migration. The study revealed a favourable location of pharmacies. As far as it is concerned, they are concentrated mainly in the central districts of Krakow, as are the whereabouts where seniors settle after migration. As fa as the supplies are concerned, the study also aimed to identify new locations for pharmacies