SortStack #761 — 2028-07-09

By population · Order from fewest to most people.

1. Sitting United States senators 100

   Two per state since 1789 — the chamber only grows when a new state joins the union.

2. The population of Reykjavík 140K

   The world's northernmost capital heats its streets and pavements with volcanic geothermal water.

3. The population of Iceland 390K

   So small that a dating app warns Icelanders if a match is actually their cousin.

4. The population of Hong Kong 7.5M

   Has more skyscrapers than any other city on Earth — roughly double New York's count.

5. The population of Istanbul 15.6M

   The only major city spanning two continents — you can commute between Europe and Asia by ferry.

6. Muslims worldwide 1.9B

   The largest Muslim population lives not in the Middle East but in Indonesia.

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