This free Population Density Calculator mainly determines population density within a specified area. Therefore, you will adequately compare various localities after using this calculator. This tool is calculation of density based on total population and area. Through this post you will learn what is population density, definition of population density, how to calculate it, formula and some other interesting facts.

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Population Density Definition

Population density is the concentration of individuals within a species in a specific geographic location. Data on population density may quantify demographic information and evaluate links with ecosystems, human health, and infrastructure as well.

Population density is a measurement of population per unit area. As for unit area, we may use various units such as square kilometers, or square miles. Population density is usually presented in maps with different population density levels in legend as below.

Population Density Map

This is the map of population density with given legend for you to understand better. As you can see, the red areas are dense ones while the white are low density areas.

How to calculate Population Density?

To get the population density, divide the population by the area size. As a result, population density is equal to the number of people that we divide by the land area. Also, we measure the land area in square miles or square kilometers.

If you’re calculating the density of a bit of place, you can use square feet or meters. Use this Population Density Calculator to get your results very quickly, by following these steps:

  • Enter total number of population
  • Enter area in km2
  • Read results as population per km2


In the following equation, Dp denotes population density, N represents the total population as a number of individuals, and A is the land area occupied by that population.


You might, however, utilize smaller units of area as well. For example, suppose you’re looking at the population density of a particular sort of bug on a tree.

In that case, you’d use square feet or square meters instead of kilometers since kilometers are way too massive. Also, if you’re looking at cattle population density on a ranch, you may alternatively use acres. Both human and non-human populations are subject to the same population density calculation.

Population Density Calculator – Example

Let’s assume, for the sake of example, that we need to calculate the density of the State of Arizona. To begin with calculating we must find the size of the State and the total number of inhabitants living there. So let’s google it.

As for size, Arizona has the specific area of land as much as 294,312 km2, while it counts 5,743,834 people living. If we put the given numbers in the calculating formula above we get the following:

Dp = \frac{N}{A} = \frac{5,743,834}{294,312}=19,5

Go ahead and enter these values in our calculator. It will calculate based on the same formula and present you result in the matter of seconds.

Another example would be to calculate the area of some place or state based on the given values of population density and the total number of inhabitants. So we need to derive the desired value from the basic equation. In other words, let’s find the mathematical solution to this problem to calculate the area.

If we multiply the above formula by the area A, then divide it by density value Dp, we will get the following formula:

A = \frac{N}{Dp}

So if we use already given set of numbers, we shall get the area as we googled it, take into account the rounding errors, we have while we calculate.

Highest population density

Furthermore, in 2019, Monaco topped the list of nations with the most excellent population density, with 26,150.3 people per km2. On the other hand, for example, the Holy See, the world’s smallest country, ranked seventh with 1,815.9 people per km2.

Globally, the population density per km2 is around 58.7 individuals. The region with the most population is Asia.

Arithmetic population density

When most people hear “population density,” they immediately think of arithmetic density. Arithmetic density is the total population divide into the entire land area. Arithmetic density, also known as actual density, does not consider whether the terrain is rural, urban, desert, or icy tundra.

Also, arithmetic density simply calculates the number of people divided by the area of land. I prefer to think of it as straightforward arithmetic.

World population density

Also, an interesting fact is that the world’s population is around 7,800,000,000, while the total area (including land and sea) of the Earth is 510,000,000 km2 (197,000,000 square miles). As a result of this extremely rough computation, the global human population density is around 7,800,000,000 / 510,000,000, which equals 15.3 per km2.


What is population density?

The population density is the number of people per unit of area, which we express in square miles or kilometers.

Which country has the highest population density

With 1,252 people per square kilometer, Bangladesh is the most densely inhabited of the big countries, about three times as dense as its neighbour, India.

What is the difference between population density and population distribution?

The average number of people per unit of area or volume is population density. The term “population distribution” refers to how individuals are scattered or spread over their ecosystem.

How to find the total number of people?

Total number of people is obtained by census in every few years.

What are dense areas?

Dense areas represent places where we many people in the given area. This size can result in smaller or larger areas.

What are the population density units?

Population density unit is number of people per km2.