SparkyData

Articles

Each article takes one question about New York City and works out what the public data can say about it. Every article ships with interactive charts, the dataset it used and the code that reproduces its numbers, and lists the source of every external figure it quotes.

All articles (21)

  1. On each city's own count of new homes, New York trailed London, the Paris region, Toronto and Tokyo per resident over the last decade
  2. New York's murder rate has fallen 88% since 1990 and is still more than three times London's
  3. New York City's in-person Election Day share fell from 96 in 100 before 2019 to about half in 2024
  4. A third of New York City's adult citizens are naturalized, nearly twice the share of 1990, and the share has held there since about 2012
  5. New York City's mayoral turnout nearly doubled in 2025, to 39 in every hundred adult citizens, the most for a mayor since 1993
  6. In New York City's midterms, the gap in reported voting between the oldest and youngest adult citizens widens to 19 points, from 12 in presidential years
  7. Most of New York City's recent unemployment gap is people out of work six months or more
  8. After inflation, New York City's minimum wage nearly doubled since 1989, and about half its wage-earners still make under $30 an hour, as they did then
  9. Per subway ride, major felonies fell for thirty years. Felony assault broke from the fall.
  10. New York's road deaths have fallen for a generation, except on two wheels
  11. New York's shootings fell to the fewest on file; its felony assaults are back at late-1990s levels
  12. Not just the cold: thirty winters of heat in New York
  13. The ambulance is slower: where the extra time goes
  14. Who gets the rent freeze
  15. Twenty months of the toll
  16. What people do in New York
  17. Raising a child in New York
  18. Who is leaving New York, and who is arriving
  19. Who still goes to the office
  20. The hour-plus commute
  21. The six-figure renter

housingconstructionpermits

On each city's own count of new homes, New York trailed London, the Paris region, Toronto and Tokyo per resident over the last decade

From 2016 to 2025 New York permitted 2.8 homes a year per 1,000 residents, the lowest of five big cities on each one's own measure; Tokyo started 9.7.

New York finished more homes in 2025 than in any year of the City's housing records, and its permits nearly doubled through September. Per resident, how do those numbers compare with London, Paris, Toronto and Tokyo, and with New York's own past?

How articles work

  • Reproducible. The numbers in an article are computed by its code from its companion dataset — not typed in.
  • Sourced. Every figure quoted from elsewhere links to the table it came from, with its vintage and margin of error.
  • Labelled. Each number says whether it was measured in one survey, estimated across two, or assumed — and every chart says what it cannot show.
  • Interactive. The charts can be filtered and re-cut in the browser; every combination they can reach was computed in advance from the data, with its margin.