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  2. Population density - Wikipedia

    Population density is the number of people per unit of area, usually transcribed as "per square kilometer" or square mile, and which may include or exclude, for example, areas of water or glaciers. Commonly this is calculated for a county, city, country, another territory or the entire world .

  3. List of countries and dependencies by population density

    Population density (people per km 2) by country in 2019 This is a list of countries and dependencies ranked by population density, measured by the number of human inhabitants per square kilometre or square mile, and also sortable by total area and by population.

  4. Population - Wikipedia

    Population typically refers to the number of people in a single area, whether it be a city or town, region, country, continent, or the world. Governments typically quantify the size of the resident population within their jurisdiction using a census, a process of collecting, analyzing, compiling, and publishing data regarding a population. Contents

  5. List of United States cities by population density - Wikipedia

    The following is a list of incorporated places in the United States with a population density of over 10,000 people per square mile. As defined by the United States Census Bureau, an incorporated place is a place that has a self-governing local government and as such has been "incorporated" by the state it is in.

  6. Physiological density - Wikipedia

    The physiological density or real population density is the number of people per unit area of arable land . A higher physiological density suggests that the available agricultural land is being used by more and may reach its output limit sooner than a country that has a lower physiological density.

  7. Urban density - Wikipedia

    Population density - the number of human persons per unit area Median density - a density metric which measures the density at which the average person lives.

  8. Density estimation - Wikipedia

    The unobservable density function is thought of as the density according to which a large population is distributed; the data are usually thought of as a random sample from that population. A variety of approaches to density estimation are used, including Parzen windows and a range of data clustering techniques, including vector quantization.