This interactive choropleth map of the United States displays the population density of each state in vivid colors. Hover over each state to view the population density and zoom in to get a closer look. Use this map to gain a better understanding of population distribution across the United
From Wikipedia
A choropleth map is a type of statistical thematic map that uses pseudocolor, meaning color corresponding with an aggregate summary of a geographic characteristic within spatial enumeration units, such as population density or per-capita income.