As of September 7, 2021 there are 2 866 657 households in Bulgaria - private and institutional. Nearly three-quarters (74.9 %) of all households live in cities. The average size of a household decreased from 5.6 persons in 1900 to 2.2 persons in 2021. As of September 7, 2021, 949 institutional households were counted in Bulgaria, in which 25 866 people live, or 0.4% of the country's population. Their average size is 27.3 persons.
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