Population data typically comes in the context of boundaries. City data. County data. Country data. With their Population Estimate Service, NASA provides data at higher granularity. You can request estimated population in the context of a world grid.
World population estimator and gridded data from NASA
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Looking at educational attainment, income, work hours, and commute, this is who has the same work life as you do.
It’s hard to think of much else. These maps show the racial divide between black and white people in major cities.