● HowManyRightNow

Largest-country comparison · 2026

Where population is growing—and declining

Among the world’s 15 largest countries, growth ranges from +3.21% in DR Congo to −0.55% in Japan. Rates combine births, deaths and net migration within the UN demographic model.

Positive annual change

Growing populations

This is a comparison among the 15 largest countries, not a ranking of every country.

Negative annual change

Declining populations

A negative total can occur even with positive net migration when deaths exceed births.

Rate versus count

The fastest rate is not always the largest addition

A smaller country can grow faster in percentage terms while adding fewer people than a much larger country. Both columns are shown to prevent that common misreading.

Projection limits

One year does not define a permanent trend

Fertility, mortality and migration can change. The 2026 values belong to the UN medium scenario and should be re-reviewed when the source revision changes.

Primary evidence

One named source, visible limits

Figures use the Medium variant of the 2024 Revision. The UN series covers 237 countries or areas; estimates and projections from 1950 to 2100 and is built from 1,910 population censuses and 3,189 nationally representative sample surveys, alongside vital-registration and other demographic systems.

These are demographic estimates and projections for country population change, not a live register of identifiable people. Mid-year values refer to 1 July; moving counters interpolate a published annual flow between anchors.