Population Density Calculator

Work out population density instantly with clear inputs, formula shown and shareable results.

About Population Density Calculator

Crude density divides population by total area, but much of that area may be water, mountain or protected land. Density on habitable land is a far better indicator of actual crowding, and it is often several times the crude figure.

Formulas

Crude density

Density = Population / Area in square kilometres

Habitable density

Habitable density = Population / (Area x Habitable share %)

Worked example

With the default values below, Population Density Calculator returns Population density of 33,830.8. Change any input above and every figure here is recalculated in your browser.

Inputs used

Population: 20,400,000
Area: 603 km2
Habitable share of the area: 85

Results

Population density: 33,830.8
Density on habitable land: 39,801.0
Density per square mile: 87,621.6
Land area per person: 29.6

Step by step

1Values used
2Crude density
3Habitable density
4Population density= 33,830.8
5Density on habitable land= 39,801.0
6Density per square mile= 87,621.6
7Land area per person= 29.6

Assumptions and limits

The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 1 decimal place, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
Indicative estimate only. Fees, entitlements, limits and formulas vary by jurisdiction, statute, policy wording and the facts of the case. This is not legal, tax, insurance or financial advice — confirm with a qualified professional or the relevant authority.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Indicative estimate only. Fees, entitlements, limits and formulas vary by jurisdiction, statute, policy wording and the facts of the case. This is not legal, tax, insurance or financial advice — confirm with a qualified professional or the relevant authority.

Frequently Asked Questions

Why does habitable area matter?

Because a country that is largely desert or mountain can have low crude density and extremely high effective density where people actually live.

What is the difference from arithmetic and physiological density?

Physiological density divides population by arable land, which is the relevant measure for food self-sufficiency questions.