Gillespie, IL Noise Levels
Gillespie, IL: what the federal noise map shows
At Gillespie, IL, road, rail and aircraft noise all fall below the 45 dB(A) floor BTS's national map can distinguish from silence. That's the reading at Gillespie's Census-defined center point, not any one street, BTS's map is a live raster, not a per-address service.
Where Gillespie ranks
Gillespie, IL sits among 8,515 US places this dataset covers with no measurable transportation noise, out of 12,137 places checked overall. By population, it ranks 6,231 of the 12,137 places in this dataset, home to about 3,087 people.
Your street may differ from Gillespie's reading
For a single house or lot in Gillespie rather than the town-wide figure above, BTS's own map is the same free source, queried directly.
More on how this number was built
For exactly which federal dataset feeds Gillespie's figure, see the methodology guide. The guide to reading a quiet result explains what "no measurable noise" actually means at Gillespie.