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NYC population change (July 2025 – July 2027)?

Live prices from Kalshi, ordered by what the market thinks. These are raw ask prices, what it actually costs to take the position, margin included.

OutcomeKalshi
Increase 0.01-0.99% 44¢
Decrease 0-0.99% 37¢
Increase 1-1.99% 11¢
Decrease 1-1.99% 11¢
Decrease 3% or more

Only outcomes with a live two-sided quote are shown. No Polymarket equivalent was matched with enough confidence to publish, so this page is Kalshi only. Prices as of Thu, 17 Sep 2026 04:55:31 UTC.

The overround on this market

Add up what it costs to back every outcome here and Kalshi's board comes to 122%. A fair book sums to 100. The excess is the house's cut, paid by whoever trades, and it is the reason the same opinion costs different amounts in different places. That number is what this site is named after.

Your call

The market says 44%. It got there by making everyone who disagreed put money behind it. You do not have to, so this is the cheap version of the same question, and the interesting number is how far the two drift apart.

44%

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The record

What this market has cost every day since 21 December 2025, taken from the exchange's own published history. The line is the mid price, halfway between what a buyer would pay and a seller would take.

0 25 50 75 100 DecJanFebMarAprMayJunJulAugSept Decrease 0-0.99% 34.5 Decrease 1-1.99% 7

Over this window Decrease 0-0.99% went from 11.5 to 34.5, a move of 23 points toward happening.

Kalshi removes a contract from its interface once it settles and Polymarket buries closed events, so this page is the copy that stays put. We also record our own snapshot once a day, independently, because a history published by the house is worth checking against one kept by somebody with no position in it.

See this on Kalshi

What settles this

Settlement source
United States Census Bureau
Contract terms
Kalshi product certification (PDF)
Closes
Thu, 01 Jun 2028 03:59:00 UTC
Resolution, for the Increase 0.01-0.99% contract
If New York City experiences a population increase of between 0.01% and 0.99% between July 1, 2025 and July 1, 2027, then the market resolves to Yes.
Ticker
KXPOPCHANGENYC-28JUN01

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