How the Haunt Index works
For fun, from public data. Every US place with 10,000 or more residents in the Census Bureau’s American Community Survey gets one number from 0 to 100. The number compares towns with each other. It does not claim anything is actually haunted.
The five readings
- Cemeteries within 5 miles. Cemetery features in the USGS Geographic Names Information System (GNIS), counted within a 5-mile circle of the town’s center, both as a raw count and relative to the land area around it.
- Vanished places within 5 miles. GNIS populated places marked “(historical)”: settlements, stations and crossroads that were named once and are gone now.
- Halloween darkness. Sunset on October 31, 2026 at the town’s center in its local time, how long the moon is up that evening and how long the night is (how much of the moon is lit, 59% this year, is the same everywhere). Earlier, darker and longer reads spookier. Computed with astronomy-engine.
- Old houses. The share of homes built in 1939 or earlier (ACS table B25034).
- Vacancy. The share of homes standing vacant (ACS table B25002).
From readings to a score
Each reading becomes a percentile: 80 means the town reads higher than 80% of all towns in the index. Every case file shows each reading’s percentile next to the evidence. The percentiles are weighted and added up into a weighted total (0–100).
The weighted total is then ranked against every other town, and the score is that rank as a percentile from 0 to 100, with one decimal: 99.7 means the town’s total beats 99.7% of the other towns. The top town reads 100.0 and the bottom one 0.0.
Old houses and vacancy are held to about a quarter of the score combined (the red bars). Both track the age and economy of a place more than anything spooky, so the score leans on cemeteries, vanished places and darkness.
Towns under 25,000 people have their weighted total pulled part of the way toward their state’s average before the ranking, because survey numbers for small places have wide error margins.
Worked example
The national number one, reading by reading.
| Reading | Value | Pctl. | Weight | Points |
|---|
What it leaves out
No ghost-sighting lists, no haunted-places databases, no rumors. Cemetery locations appear only as dots on the map; no cemetery is named or joked about. The jokes are about towns, the weather and the investigator.
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