SortStack #579 — 2028-01-09

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 San Marino 34K

   Claims to be the world's oldest republic, founded — by tradition — in the year 301.

3. The population of Singapore 5.9M

   A city-state smaller than New York City, yet one of the world's busiest ports.

4. Mumbai — the city proper 12.5M

   Its dabbawalas deliver about 200,000 lunchboxes daily with near-perfect accuracy, no apps involved.

5. The population of Italy 59M

   Home to the most UNESCO World Heritage sites of any country.

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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