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Another factor is shrinking household size. A house that before gentrification held a bunch of children, at least one parent, and often some grandparents or members of the extended family now is occupied by DINKs, retirees, or singles. Families with children of course still exist but as a smaller percentage of city households and typically with fewer children. The 2020 Census should yield some very interesting statistics on how much the average household in cities has changed just in the past decade.

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