Top 10 most populous countries and regions in 1980

Reporting boundaries are part of the question

The World Bank series reports individual economies under its data boundaries. Russia and Germany appear as reporting units even though the political map of 1980 included the Soviet Union and a divided Germany. This is not a reconstructed list of sovereign states that existed in that year. Substituting the entire Soviet Union for Russia would change both the population and the unit being ranked. The title therefore includes countries and regions and the method explicitly identifies the source’s boundaries.

How large was the lead?

Subtracting the stored figures puts China about 293.9 million ahead of India. India’s population was roughly three times the United States figure of 227.2 million. Meanwhile, Indonesia and Russia were separated by about 9.9 million, despite occupying adjacent positions. The chart starts at zero so those very different gaps remain visible. A bar chart based only on the rank numbers would erase the most useful information and falsely suggest that every step down the list has equal size.

Why a later list looks different

The 2000 puzzle provides a useful second observation using the same reporting framework. Pakistan overtakes Russia in that later snapshot, while Nigeria enters the first ten and Germany leaves. These are comparisons of reported population levels at two dates; the ranking alone cannot identify whether births, mortality or migration caused the movement. A country can also grow substantially while falling in rank if another grows faster. Position and absolute population should be read together.

Reproducing the saved ranking

Choose the 1980 observation, remove regional and income-group aggregates, exclude null values and sort the remaining populations from largest to smallest. Keeping “World” or a regional total in the candidates would overwhelm the country entries. The table and chart use the preserved September 2026 source snapshot, rather than fetching a changing API response in the reader’s browser. Later statistical revisions may alter a precise historical estimate; they should be documented instead of silently rewriting a completed game.

Sources & further reading

• World Bank — World Development Indicators
• World Bank: indicator definitions and sources

Explanation updated Sunday, November 1, 2026. The puzzle’s original data date is listed below.