SortStack #103 — 2026-09-20

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. Seats in the Sydney Opera House's main concert hall 2.7K

   The building's sails were so hard to engineer that the design pre-dated computers able to verify it.

3. Seats on Wimbledon's Centre Court 15K

   The retractable roof takes about ten minutes to close — rain delays used to last days.

4. The population of Cape Verde 520K

   More Cape Verdeans live abroad than on the islands themselves.

5. San Francisco — the city proper 810K

   Smaller in population than Indianapolis, despite its outsized cultural footprint.

6. The population of Argentina 46M

   Nearly two-thirds of Argentines have Italian ancestry — hence the accent in their Spanish.

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