Source imagery for HRSL © 2016 DigitalGlobe. To reference this data, please use the following citation: Facebook Connectivity Lab and Center for International Earth Science Information Network - CIESIN - Columbia University. This preserves the relative population totals across administrative units while matching the UN total. The resulting adjustment factor is multiplied by each administrative unit census value for the target year. The UN estimate for a given country (or state/territory) is divided by the total census estimate of population for the given country. These are produced using the unconstrained top-down modelling method. Here are some key national-level 2020 Census results to help you see how your state or county compares in each topic area: Population (up 7.4 to 331.4 million). For more information about the methodology used to create our high resolution population density maps and the demographic distributions, please visit: įor information about how to use HDX to access these datasets, please visit: Īdjustments to match the census population with the UN estimates are applied at the national level. Through interactive state and county maps for the 50 states, the District of Columbia and Puerto Rico, each page provides a snapshot of change from 2010 to 2020 on five topics. The resulting maps are the most detailed and actionable tools available for aid and research organizations. Then we work with our partners at Columbia University to overlay general population estimates based on publicly available census data and other population statistics. This map shows the population density of North America for the year 2020 in number of people per square kilometer within 2.5 arc-minute pixels. To create our high-resolution maps, we use machine learning techniques to identify buildings from commercially available satellite images. Creative Commons Attribution International
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