Hillcrest, IL Noise Levels
Hillcrest, IL: what the federal noise map shows
At Hillcrest, 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 Hillcrest, not a street-by-street survey of the whole place.
Where Hillcrest ranks
Hillcrest, IL sits among 8,515 US places this dataset covers with no measurable transportation noise, out of 12,137 places checked overall. Population is about 1,206, 9,569th largest of the 12,137 places covered here.
Your street may differ from Hillcrest's reading
For a single house or lot in Hillcrest 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 Hillcrest's figure, see the methodology guide. The guide to reading a quiet result explains what "no measurable noise" actually means at Hillcrest.