The article examines the propertied families of Cracow in the middle of the 19th century from the point of view of historical demography and social history. While drawing mainly on undifferentiated data, this study is particularly indebted to the Cracow cadaster, a municipal land register, set up in 1848-1852, which contains lists of property owners, as well as the 1857 census with its detailed records of both property owners and their families. The scope of this study is limited to property in private hands and does not include real property owned by the state, the municipality or religious and civic bodies. The first part of the article deals with the property owners themselves and their property. Our analysis shows that the real estate was hardly concentrated: most of landlords owned held but one property title. Although the majority of the landlords are men, the proportion of women in this group is unexpectedly high. A survey of the religious affiliation of that group reveals a domination of Roman Catholics, who owned nearly three quarters of Cracow's real estate. The Jews, who made up 38% of the population, had a disproportionately smaller slice of that market. The next section is concerned with the gender and age structure of the members of the landlord class and (in so far as the incomplete records made it possible) their profile in terms of gender, marital status, and socio-economic status. Further analyses attempt to reconstruct the model of the family to be found in that group, outline the size of a typical household and figure out the proportions between nuclear family members and dependants. Other comparisons deal with complete and incomplete families and religiously homogeneous versus religiously heterogeneous households.