SortStack #852 — 2028-10-08

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 Norway 5.5M

   Its sovereign wealth fund owns about 1.5 percent of every listed company on Earth.

4. Greater Cairo, Egypt's capital region 22M

   Africa's largest metro area sits beside pyramids that were already ancient to Cleopatra.

5. The population of Mexico 128M

   The world's largest Spanish-speaking country — twice the size of Spain by people.

6. People with an Instagram account 2B

   If it were a country, it would be the largest on Earth — by a wide margin.

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