North Chicago, IL Noise Levels
North Chicago, IL: what the federal noise map shows
North Chicago, IL is one of the places where the federal model has nothing to report above its 45 dB(A) floor, on any of the three sources.
That figure is sampled at one coordinate, the Census Bureau's own internal point for North Chicago, not a street-by-street survey of the whole place.
Where North Chicago ranks
North Chicago, 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 1,333 of the 12,137 places in this dataset, home to about 30,639 people.
Your street may differ from North Chicago's reading
For a single house or lot in North Chicago 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 North Chicago's figure, see the methodology guide. The guide to reading a quiet result explains what "no measurable noise" actually means at North Chicago.