Stillman Valley, IL Noise Levels
Stillman Valley, IL: what the federal noise map shows
At Stillman Valley, IL, road, rail and aircraft noise all fall below the 45 dB(A) floor BTS's national map can distinguish from silence. That figure is sampled at one coordinate, the Census Bureau's own internal point for Stillman Valley, not a street-by-street survey of the whole place.
Where Stillman Valley ranks
Stillman Valley is one of 8,515 places in this dataset with no measurable transportation noise at all, too quiet to rank on loudness. Population is about 1,052, 10,058th largest of the 12,137 places covered here.
Your street may differ from Stillman Valley's reading
For a single house or lot in Stillman Valley 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 Stillman Valley's figure, see the methodology guide. The guide to reading a quiet result explains what "no measurable noise" actually means at Stillman Valley.