The highest population density in Atlanta is more than 5,000 people per sq. mi.
Population density is a measure of the number of people per unit of area. In this case, we are looking at the population density in Atlanta. The highest population density is categorized as "more than 5,000 people per sq. mi."
This means that in the area being considered, there are more than 5,000 people living within each square mile. This indicates a high concentration of population in that specific area of Atlanta.
It's important to note that population density can vary across different regions and neighborhoods within a city. In Atlanta, there are areas with lower population densities as well. However, in terms of the highest density, it exceeds 5,000 people per square mile.